Home / 156,745.28-216,306.51-85,125.80

Finding the Fourth Proportional to 156,745.28, 216,306.51 and 85,125.80

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Solution

The fourth proportional to 156,745.28, 216,306.51 and 85,125.80 is: 117,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,745.28 : 216,306.51 = 85,125.80 : x
  2. Step 2: Convert to fraction form
    156,745.28/216,306.51 = 85,125.80/x
  3. Step 3: Cross multiply
    156,745.28x = 216,306.51 × 85,125.80
  4. Step 4: Simplify right side
    156,745.28x = 18,413,264,708.96
  5. Step 5: Solve for x
    x = 18,413,264,708.96/156,745.28
  6. Step 6: Final answer
    x = 117,472.53

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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.