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Finding the Third Proportional to 85,142,344 and 129,838,960

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Solution

The third proportional to 85,142,344 and 129,838,960 is: 197,999,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142,344 : 129,838,960 = 129,838,960 : x
  2. Step 2: Convert to fraction form
    85,142,344/129,838,960 = 129,838,960/x
  3. Step 3: Cross multiply
    85,142,344x = 129,838,960 × 129,838,960
  4. Step 4: Simplify right side
    85,142,344x = 16,858,155,533,881,600
  5. Step 5: Solve for x
    x = 16,858,155,533,881,600/85,142,344
  6. Step 6: Final answer
    x = 197,999,664.35

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.