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Finding the Third Proportional to 87,901,141.50 and 129,310,969.50

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Solution

The third proportional to 87,901,141.50 and 129,310,969.50 is: 190,228,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,901,141.50 : 129,310,969.50 = 129,310,969.50 : x
  2. Step 2: Convert to fraction form
    87,901,141.50/129,310,969.50 = 129,310,969.50/x
  3. Step 3: Cross multiply
    87,901,141.50x = 129,310,969.50 × 129,310,969.50
  4. Step 4: Simplify right side
    87,901,141.50x = 16,721,326,833,029,930
  5. Step 5: Solve for x
    x = 16,721,326,833,029,930/87,901,141.50
  6. Step 6: Final answer
    x = 190,228,779.15

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.