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Finding the Fourth Proportional to 169,955.60, 255,079.20 and 75,331.40

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Solution

The fourth proportional to 169,955.60, 255,079.20 and 75,331.40 is: 113,061.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,955.60 : 255,079.20 = 75,331.40 : x
  2. Step 2: Convert to fraction form
    169,955.60/255,079.20 = 75,331.40/x
  3. Step 3: Cross multiply
    169,955.60x = 255,079.20 × 75,331.40
  4. Step 4: Simplify right side
    169,955.60x = 19,215,473,246.88
  5. Step 5: Solve for x
    x = 19,215,473,246.88/169,955.60
  6. Step 6: Final answer
    x = 113,061.72

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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.