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Finding the Third Proportional to 87,854,688 and 128,548,023

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Solution

The third proportional to 87,854,688 and 128,548,023 is: 188,090,067.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854,688 : 128,548,023 = 128,548,023 : x
  2. Step 2: Convert to fraction form
    87,854,688/128,548,023 = 128,548,023/x
  3. Step 3: Cross multiply
    87,854,688x = 128,548,023 × 128,548,023
  4. Step 4: Simplify right side
    87,854,688x = 16,524,594,217,208,528
  5. Step 5: Solve for x
    x = 16,524,594,217,208,528/87,854,688
  6. Step 6: Final answer
    x = 188,090,067.74

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.