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Finding the Fourth Proportional to 124,446.74, 171,735.81 and 67,856.90

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Solution

The fourth proportional to 124,446.74, 171,735.81 and 67,856.90 is: 93,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,446.74 : 171,735.81 = 67,856.90 : x
  2. Step 2: Convert to fraction form
    124,446.74/171,735.81 = 67,856.90/x
  3. Step 3: Cross multiply
    124,446.74x = 171,735.81 × 67,856.90
  4. Step 4: Simplify right side
    124,446.74x = 11,653,459,685.59
  5. Step 5: Solve for x
    x = 11,653,459,685.59/124,446.74
  6. Step 6: Final answer
    x = 93,642.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.