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Finding the Third Proportional to 72,726,537 and 156,989,715

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Solution

The third proportional to 72,726,537 and 156,989,715 is: 338,882,774.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,726,537 : 156,989,715 = 156,989,715 : x
  2. Step 2: Convert to fraction form
    72,726,537/156,989,715 = 156,989,715/x
  3. Step 3: Cross multiply
    72,726,537x = 156,989,715 × 156,989,715
  4. Step 4: Simplify right side
    72,726,537x = 24,645,770,615,781,224
  5. Step 5: Solve for x
    x = 24,645,770,615,781,224/72,726,537
  6. Step 6: Final answer
    x = 338,882,774.19

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.