Home / 126,084.30-189,126.45-72,940.20

Finding the Fourth Proportional to 126,084.30, 189,126.45 and 72,940.20

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Solution

The fourth proportional to 126,084.30, 189,126.45 and 72,940.20 is: 109,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,084.30 : 189,126.45 = 72,940.20 : x
  2. Step 2: Convert to fraction form
    126,084.30/189,126.45 = 72,940.20/x
  3. Step 3: Cross multiply
    126,084.30x = 189,126.45 × 72,940.20
  4. Step 4: Simplify right side
    126,084.30x = 13,794,921,088.29
  5. Step 5: Solve for x
    x = 13,794,921,088.29/126,084.30
  6. Step 6: Final answer
    x = 109,410.30

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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.