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Finding the Fourth Proportional to 124,575.75, 171,915.72 and 67,987.11

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Solution

The fourth proportional to 124,575.75, 171,915.72 and 67,987.11 is: 93,822.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,575.75 : 171,915.72 = 67,987.11 : x
  2. Step 2: Convert to fraction form
    124,575.75/171,915.72 = 67,987.11/x
  3. Step 3: Cross multiply
    124,575.75x = 171,915.72 × 67,987.11
  4. Step 4: Simplify right side
    124,575.75x = 11,688,052,966.37
  5. Step 5: Solve for x
    x = 11,688,052,966.37/124,575.75
  6. Step 6: Final answer
    x = 93,822.86

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1.5x scale

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.