Home / 156,000.39-215,280.59-88,031.81

Finding the Fourth Proportional to 156,000.39, 215,280.59 and 88,031.81

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Solution

The fourth proportional to 156,000.39, 215,280.59 and 88,031.81 is: 121,483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,000.39 : 215,280.59 = 88,031.81 : x
  2. Step 2: Convert to fraction form
    156,000.39/215,280.59 = 88,031.81/x
  3. Step 3: Cross multiply
    156,000.39x = 215,280.59 × 88,031.81
  4. Step 4: Simplify right side
    156,000.39x = 18,951,538,479.01
  5. Step 5: Solve for x
    x = 18,951,538,479.01/156,000.39
  6. Step 6: Final answer
    x = 121,483.92

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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.