Home / 156,839.91-216,434.26-85,218.40

Finding the Fourth Proportional to 156,839.91, 216,434.26 and 85,218.40

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Solution

The fourth proportional to 156,839.91, 216,434.26 and 85,218.40 is: 117,598.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,839.91 : 216,434.26 = 85,218.40 : x
  2. Step 2: Convert to fraction form
    156,839.91/216,434.26 = 85,218.40/x
  3. Step 3: Cross multiply
    156,839.91x = 216,434.26 × 85,218.40
  4. Step 4: Simplify right side
    156,839.91x = 18,444,181,342.38
  5. Step 5: Solve for x
    x = 18,444,181,342.38/156,839.91
  6. Step 6: Final answer
    x = 117,598.78

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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.