Home / 128,125.15-192,188.41-84,031.13

Finding the Fourth Proportional to 128,125.15, 192,188.41 and 84,031.13

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Solution

The fourth proportional to 128,125.15, 192,188.41 and 84,031.13 is: 126,047.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,125.15 : 192,188.41 = 84,031.13 : x
  2. Step 2: Convert to fraction form
    128,125.15/192,188.41 = 84,031.13/x
  3. Step 3: Cross multiply
    128,125.15x = 192,188.41 × 84,031.13
  4. Step 4: Simplify right side
    128,125.15x = 16,149,809,265.20
  5. Step 5: Solve for x
    x = 16,149,809,265.20/128,125.15
  6. Step 6: Final answer
    x = 126,047.14

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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.