Home / 156,638.27-216,155.02-85,016.76

Finding the Fourth Proportional to 156,638.27, 216,155.02 and 85,016.76

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Solution

The fourth proportional to 156,638.27, 216,155.02 and 85,016.76 is: 117,319.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.27 : 216,155.02 = 85,016.76 : x
  2. Step 2: Convert to fraction form
    156,638.27/216,155.02 = 85,016.76/x
  3. Step 3: Cross multiply
    156,638.27x = 216,155.02 × 85,016.76
  4. Step 4: Simplify right side
    156,638.27x = 18,376,799,458.14
  5. Step 5: Solve for x
    x = 18,376,799,458.14/156,638.27
  6. Step 6: Final answer
    x = 117,319.98

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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.