Home / 129,904.01-179,248.27-78,890.13

Finding the Fourth Proportional to 129,904.01, 179,248.27 and 78,890.13

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Solution

The fourth proportional to 129,904.01, 179,248.27 and 78,890.13 is: 108,856.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,904.01 : 179,248.27 = 78,890.13 : x
  2. Step 2: Convert to fraction form
    129,904.01/179,248.27 = 78,890.13/x
  3. Step 3: Cross multiply
    129,904.01x = 179,248.27 × 78,890.13
  4. Step 4: Simplify right side
    129,904.01x = 14,140,919,322.58
  5. Step 5: Solve for x
    x = 14,140,919,322.58/129,904.01
  6. Step 6: Final answer
    x = 108,856.68

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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.