Home / 231,123.20-318,946.04-129,150.32

Finding the Fourth Proportional to 231,123.20, 318,946.04 and 129,150.32

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Solution

The fourth proportional to 231,123.20, 318,946.04 and 129,150.32 is: 178,225.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,123.20 : 318,946.04 = 129,150.32 : x
  2. Step 2: Convert to fraction form
    231,123.20/318,946.04 = 129,150.32/x
  3. Step 3: Cross multiply
    231,123.20x = 318,946.04 × 129,150.32
  4. Step 4: Simplify right side
    231,123.20x = 41,191,983,128.73
  5. Step 5: Solve for x
    x = 41,191,983,128.73/231,123.20
  6. Step 6: Final answer
    x = 178,225.22

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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.