Home / 128,331.13-192,367.45-53,492.70

Finding the Fourth Proportional to 128,331.13, 192,367.45 and 53,492.70

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Solution

The fourth proportional to 128,331.13, 192,367.45 and 53,492.70 is: 80,185.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,331.13 : 192,367.45 = 53,492.70 : x
  2. Step 2: Convert to fraction form
    128,331.13/192,367.45 = 53,492.70/x
  3. Step 3: Cross multiply
    128,331.13x = 192,367.45 × 53,492.70
  4. Step 4: Simplify right side
    128,331.13x = 10,290,254,025.15
  5. Step 5: Solve for x
    x = 10,290,254,025.15/128,331.13
  6. Step 6: Final answer
    x = 80,185.17

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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.