Home / 130,330.17-179,901.95-79,319.61

Finding the Fourth Proportional to 130,330.17, 179,901.95 and 79,319.61

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Solution

The fourth proportional to 130,330.17, 179,901.95 and 79,319.61 is: 109,489.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,330.17 : 179,901.95 = 79,319.61 : x
  2. Step 2: Convert to fraction form
    130,330.17/179,901.95 = 79,319.61/x
  3. Step 3: Cross multiply
    130,330.17x = 179,901.95 × 79,319.61
  4. Step 4: Simplify right side
    130,330.17x = 14,269,752,115.64
  5. Step 5: Solve for x
    x = 14,269,752,115.64/130,330.17
  6. Step 6: Final answer
    x = 109,489.25

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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.