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Finding the Fourth Proportional to 125,687.30, 173,439.23 and 71,970.93

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Solution

The fourth proportional to 125,687.30, 173,439.23 and 71,970.93 is: 99,314.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,687.30 : 173,439.23 = 71,970.93 : x
  2. Step 2: Convert to fraction form
    125,687.30/173,439.23 = 71,970.93/x
  3. Step 3: Cross multiply
    125,687.30x = 173,439.23 × 71,970.93
  4. Step 4: Simplify right side
    125,687.30x = 12,482,582,321.73
  5. Step 5: Solve for x
    x = 12,482,582,321.73/125,687.30
  6. Step 6: Final answer
    x = 99,314.59

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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.