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Finding the Fourth Proportional to 102,613.20, 153,919.80 and 36,128.40

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Solution

The fourth proportional to 102,613.20, 153,919.80 and 36,128.40 is: 54,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,613.20 : 153,919.80 = 36,128.40 : x
  2. Step 2: Convert to fraction form
    102,613.20/153,919.80 = 36,128.40/x
  3. Step 3: Cross multiply
    102,613.20x = 153,919.80 × 36,128.40
  4. Step 4: Simplify right side
    102,613.20x = 5,560,876,102.32
  5. Step 5: Solve for x
    x = 5,560,876,102.32/102,613.20
  6. Step 6: Final answer
    x = 54,192.60

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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.