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Finding the Third Proportional to 89,850,712 and 128,398,740

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Solution

The third proportional to 89,850,712 and 128,398,740 is: 183,484,761.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,850,712 : 128,398,740 = 128,398,740 : x
  2. Step 2: Convert to fraction form
    89,850,712/128,398,740 = 128,398,740/x
  3. Step 3: Cross multiply
    89,850,712x = 128,398,740 × 128,398,740
  4. Step 4: Simplify right side
    89,850,712x = 16,486,236,433,587,600
  5. Step 5: Solve for x
    x = 16,486,236,433,587,600/89,850,712
  6. Step 6: Final answer
    x = 183,484,761.18

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.