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Finding the Third Proportional to 56,690 and 124,288

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Solution

The third proportional to 56,690 and 124,288 is: 272,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,690 : 124,288 = 124,288 : x
  2. Step 2: Convert to fraction form
    56,690/124,288 = 124,288/x
  3. Step 3: Cross multiply
    56,690x = 124,288 × 124,288
  4. Step 4: Simplify right side
    56,690x = 15,447,506,944
  5. Step 5: Solve for x
    x = 15,447,506,944/56,690
  6. Step 6: Final answer
    x = 272,490.86

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.