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Finding the Third Proportional to 98,421 and 156,681

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Solution

The third proportional to 98,421 and 156,681 is: 249,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,421 : 156,681 = 156,681 : x
  2. Step 2: Convert to fraction form
    98,421/156,681 = 156,681/x
  3. Step 3: Cross multiply
    98,421x = 156,681 × 156,681
  4. Step 4: Simplify right side
    98,421x = 24,548,935,761
  5. Step 5: Solve for x
    x = 24,548,935,761/98,421
  6. Step 6: Final answer
    x = 249,427.82

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.