Home / 151,510,262,369.89-209,084,716,000.48-81,985,903,607.38

Finding the Fourth Proportional to 151,510,262,369.89, 209,084,716,000.48 and 81,985,903,607.38

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Solution

The fourth proportional to 151,510,262,369.89, 209,084,716,000.48 and 81,985,903,607.38 is: 113,140,846,723.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,510,262,369.89 : 209,084,716,000.48 = 81,985,903,607.38 : x
  2. Step 2: Convert to fraction form
    151,510,262,369.89/209,084,716,000.48 = 81,985,903,607.38/x
  3. Step 3: Cross multiply
    151,510,262,369.89x = 209,084,716,000.48 × 81,985,903,607.38
  4. Step 4: Simplify right side
    151,510,262,369.89x = 17,141,999,371,791,777,136,640
  5. Step 5: Solve for x
    x = 17,141,999,371,791,777,136,640/151,510,262,369.89
  6. Step 6: Final answer
    x = 113,140,846,723.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.