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Finding the Fourth Proportional to 100,037.62, 138,046.26 and 54,706.60

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Solution

The fourth proportional to 100,037.62, 138,046.26 and 54,706.60 is: 75,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,037.62 : 138,046.26 = 54,706.60 : x
  2. Step 2: Convert to fraction form
    100,037.62/138,046.26 = 54,706.60/x
  3. Step 3: Cross multiply
    100,037.62x = 138,046.26 × 54,706.60
  4. Step 4: Simplify right side
    100,037.62x = 7,552,041,527.32
  5. Step 5: Solve for x
    x = 7,552,041,527.32/100,037.62
  6. Step 6: Final answer
    x = 75,492.02

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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.