Home / 100,989,665.54-151,484,498.55-77,994,141.20

Finding the Fourth Proportional to 100,989,665.54, 151,484,498.55 and 77,994,141.20

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Solution

The fourth proportional to 100,989,665.54, 151,484,498.55 and 77,994,141.20 is: 116,991,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,989,665.54 : 151,484,498.55 = 77,994,141.20 : x
  2. Step 2: Convert to fraction form
    100,989,665.54/151,484,498.55 = 77,994,141.20/x
  3. Step 3: Cross multiply
    100,989,665.54x = 151,484,498.55 × 77,994,141.20
  4. Step 4: Simplify right side
    100,989,665.54x = 11,814,903,368,762,472
  5. Step 5: Solve for x
    x = 11,814,903,368,762,472/100,989,665.54
  6. Step 6: Final answer
    x = 116,991,211.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.