Home / 128,332.25-192,531.18-53,427.50

Finding the Fourth Proportional to 128,332.25, 192,531.18 and 53,427.50

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Solution

The fourth proportional to 128,332.25, 192,531.18 and 53,427.50 is: 80,154.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,332.25 : 192,531.18 = 53,427.50 : x
  2. Step 2: Convert to fraction form
    128,332.25/192,531.18 = 53,427.50/x
  3. Step 3: Cross multiply
    128,332.25x = 192,531.18 × 53,427.50
  4. Step 4: Simplify right side
    128,332.25x = 10,286,459,278.61
  5. Step 5: Solve for x
    x = 10,286,459,278.61/128,332.25
  6. Step 6: Final answer
    x = 80,154.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.