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Finding the Fourth Proportional to 127,641.80, 191,482.96 and 38,874.72

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Solution

The fourth proportional to 127,641.80, 191,482.96 and 38,874.72 is: 58,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,641.80 : 191,482.96 = 38,874.72 : x
  2. Step 2: Convert to fraction form
    127,641.80/191,482.96 = 38,874.72/x
  3. Step 3: Cross multiply
    127,641.80x = 191,482.96 × 38,874.72
  4. Step 4: Simplify right side
    127,641.80x = 7,443,846,454.77
  5. Step 5: Solve for x
    x = 7,443,846,454.77/127,641.80
  6. Step 6: Final answer
    x = 58,318.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.