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Finding the Fourth Proportional to 154,381.70, 231,572.55 and 75,649.70

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Solution

The fourth proportional to 154,381.70, 231,572.55 and 75,649.70 is: 113,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,381.70 : 231,572.55 = 75,649.70 : x
  2. Step 2: Convert to fraction form
    154,381.70/231,572.55 = 75,649.70/x
  3. Step 3: Cross multiply
    154,381.70x = 231,572.55 × 75,649.70
  4. Step 4: Simplify right side
    154,381.70x = 17,518,393,935.74
  5. Step 5: Solve for x
    x = 17,518,393,935.74/154,381.70
  6. Step 6: Final answer
    x = 113,474.55

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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.