Home / 130,385.23-179,959.69-79,414.76

Finding the Fourth Proportional to 130,385.23, 179,959.69 and 79,414.76

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Solution

The fourth proportional to 130,385.23, 179,959.69 and 79,414.76 is: 109,609.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,385.23 : 179,959.69 = 79,414.76 : x
  2. Step 2: Convert to fraction form
    130,385.23/179,959.69 = 79,414.76/x
  3. Step 3: Cross multiply
    130,385.23x = 179,959.69 × 79,414.76
  4. Step 4: Simplify right side
    130,385.23x = 14,291,456,140.19
  5. Step 5: Solve for x
    x = 14,291,456,140.19/130,385.23
  6. Step 6: Final answer
    x = 109,609.47

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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.