Home / 126,904.32-175,109.04-78,554.88

Finding the Fourth Proportional to 126,904.32, 175,109.04 and 78,554.88

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Solution

The fourth proportional to 126,904.32, 175,109.04 and 78,554.88 is: 108,394.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,904.32 : 175,109.04 = 78,554.88 : x
  2. Step 2: Convert to fraction form
    126,904.32/175,109.04 = 78,554.88/x
  3. Step 3: Cross multiply
    126,904.32x = 175,109.04 × 78,554.88
  4. Step 4: Simplify right side
    126,904.32x = 13,755,669,624.12
  5. Step 5: Solve for x
    x = 13,755,669,624.12/126,904.32
  6. Step 6: Final answer
    x = 108,394.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.