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Finding the Third Proportional to 87,917,807 and 129,243,076

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Solution

The third proportional to 87,917,807 and 129,243,076 is: 189,993,054.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,917,807 : 129,243,076 = 129,243,076 : x
  2. Step 2: Convert to fraction form
    87,917,807/129,243,076 = 129,243,076/x
  3. Step 3: Cross multiply
    87,917,807x = 129,243,076 × 129,243,076
  4. Step 4: Simplify right side
    87,917,807x = 16,703,772,693,941,776
  5. Step 5: Solve for x
    x = 16,703,772,693,941,776/87,917,807
  6. Step 6: Final answer
    x = 189,993,054.47

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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.