Home / 130,891.17-180,624.87-79,989.02

Finding the Fourth Proportional to 130,891.17, 180,624.87 and 79,989.02

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Solution

The fourth proportional to 130,891.17, 180,624.87 and 79,989.02 is: 110,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,891.17 : 180,624.87 = 79,989.02 : x
  2. Step 2: Convert to fraction form
    130,891.17/180,624.87 = 79,989.02/x
  3. Step 3: Cross multiply
    130,891.17x = 180,624.87 × 79,989.02
  4. Step 4: Simplify right side
    130,891.17x = 14,448,005,435.80
  5. Step 5: Solve for x
    x = 14,448,005,435.80/130,891.17
  6. Step 6: Final answer
    x = 110,381.82

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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.