Home / 129,779.04-179,094.78-72,414.84

Finding the Fourth Proportional to 129,779.04, 179,094.78 and 72,414.84

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Solution

The fourth proportional to 129,779.04, 179,094.78 and 72,414.84 is: 99,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,779.04 : 179,094.78 = 72,414.84 : x
  2. Step 2: Convert to fraction form
    129,779.04/179,094.78 = 72,414.84/x
  3. Step 3: Cross multiply
    129,779.04x = 179,094.78 × 72,414.84
  4. Step 4: Simplify right side
    129,779.04x = 12,969,120,510.14
  5. Step 5: Solve for x
    x = 12,969,120,510.14/129,779.04
  6. Step 6: Final answer
    x = 99,932.32

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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.