Home / 139,968,362.20-209,952,543.30-128,064,083.80

Finding the Fourth Proportional to 139,968,362.20, 209,952,543.30 and 128,064,083.80

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Solution

The fourth proportional to 139,968,362.20, 209,952,543.30 and 128,064,083.80 is: 192,096,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,362.20 : 209,952,543.30 = 128,064,083.80 : x
  2. Step 2: Convert to fraction form
    139,968,362.20/209,952,543.30 = 128,064,083.80/x
  3. Step 3: Cross multiply
    139,968,362.20x = 209,952,543.30 × 128,064,083.80
  4. Step 4: Simplify right side
    139,968,362.20x = 26,887,380,099,194,328
  5. Step 5: Solve for x
    x = 26,887,380,099,194,328/139,968,362.20
  6. Step 6: Final answer
    x = 192,096,125.70

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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.