Home / 156,742.08-216,305.52-85,122.72

Finding the Fourth Proportional to 156,742.08, 216,305.52 and 85,122.72

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Solution

The fourth proportional to 156,742.08, 216,305.52 and 85,122.72 is: 117,470.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,742.08 : 216,305.52 = 85,122.72 : x
  2. Step 2: Convert to fraction form
    156,742.08/216,305.52 = 85,122.72/x
  3. Step 3: Cross multiply
    156,742.08x = 216,305.52 × 85,122.72
  4. Step 4: Simplify right side
    156,742.08x = 18,412,514,213.41
  5. Step 5: Solve for x
    x = 18,412,514,213.41/156,742.08
  6. Step 6: Final answer
    x = 117,470.14

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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.