Home / 130,155.12-179,585.10-79,194.38

Finding the Fourth Proportional to 130,155.12, 179,585.10 and 79,194.38

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Solution

The fourth proportional to 130,155.12, 179,585.10 and 79,194.38 is: 109,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,155.12 : 179,585.10 = 79,194.38 : x
  2. Step 2: Convert to fraction form
    130,155.12/179,585.10 = 79,194.38/x
  3. Step 3: Cross multiply
    130,155.12x = 179,585.10 × 79,194.38
  4. Step 4: Simplify right side
    130,155.12x = 14,222,129,753.81
  5. Step 5: Solve for x
    x = 14,222,129,753.81/130,155.12
  6. Step 6: Final answer
    x = 109,270.61

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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.