Home / 129,779.04-179,061.16-76,035.20

Finding the Fourth Proportional to 129,779.04, 179,061.16 and 76,035.20

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Solution

The fourth proportional to 129,779.04, 179,061.16 and 76,035.20 is: 104,908.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,779.04 : 179,061.16 = 76,035.20 : x
  2. Step 2: Convert to fraction form
    129,779.04/179,061.16 = 76,035.20/x
  3. Step 3: Cross multiply
    129,779.04x = 179,061.16 × 76,035.20
  4. Step 4: Simplify right side
    129,779.04x = 13,614,951,112.83
  5. Step 5: Solve for x
    x = 13,614,951,112.83/129,779.04
  6. Step 6: Final answer
    x = 104,908.71

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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.