Home / 156,737.14-215,805.60-138,321.40

Finding the Fourth Proportional to 156,737.14, 215,805.60 and 138,321.40

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Solution

The fourth proportional to 156,737.14, 215,805.60 and 138,321.40 is: 190,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,737.14 : 215,805.60 = 138,321.40 : x
  2. Step 2: Convert to fraction form
    156,737.14/215,805.60 = 138,321.40/x
  3. Step 3: Cross multiply
    156,737.14x = 215,805.60 × 138,321.40
  4. Step 4: Simplify right side
    156,737.14x = 29,850,532,719.84
  5. Step 5: Solve for x
    x = 29,850,532,719.84/156,737.14
  6. Step 6: Final answer
    x = 190,449.65

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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.