Home / 87,549.53-121,306.26-85,657.77

Finding the Fourth Proportional to 87,549.53, 121,306.26 and 85,657.77

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Solution

The fourth proportional to 87,549.53, 121,306.26 and 85,657.77 is: 118,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,549.53 : 121,306.26 = 85,657.77 : x
  2. Step 2: Convert to fraction form
    87,549.53/121,306.26 = 85,657.77/x
  3. Step 3: Cross multiply
    87,549.53x = 121,306.26 × 85,657.77
  4. Step 4: Simplify right side
    87,549.53x = 10,390,823,718.64
  5. Step 5: Solve for x
    x = 10,390,823,718.64/87,549.53
  6. Step 6: Final answer
    x = 118,685.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.