Home / 156,701.28-216,248.91-85,081.35

Finding the Fourth Proportional to 156,701.28, 216,248.91 and 85,081.35

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Solution

The fourth proportional to 156,701.28, 216,248.91 and 85,081.35 is: 117,412.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,701.28 : 216,248.91 = 85,081.35 : x
  2. Step 2: Convert to fraction form
    156,701.28/216,248.91 = 85,081.35/x
  3. Step 3: Cross multiply
    156,701.28x = 216,248.91 × 85,081.35
  4. Step 4: Simplify right side
    156,701.28x = 18,398,749,198.83
  5. Step 5: Solve for x
    x = 18,398,749,198.83/156,701.28
  6. Step 6: Final answer
    x = 117,412.88

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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.