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Finding the Fourth Proportional to 104,613.60, 156,920.40 and 69,439.20

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Solution

The fourth proportional to 104,613.60, 156,920.40 and 69,439.20 is: 104,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,613.60 : 156,920.40 = 69,439.20 : x
  2. Step 2: Convert to fraction form
    104,613.60/156,920.40 = 69,439.20/x
  3. Step 3: Cross multiply
    104,613.60x = 156,920.40 × 69,439.20
  4. Step 4: Simplify right side
    104,613.60x = 10,896,427,039.68
  5. Step 5: Solve for x
    x = 10,896,427,039.68/104,613.60
  6. Step 6: Final answer
    x = 104,158.80

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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.