Home / 130,789.17-180,543.90-88,405.11

Finding the Fourth Proportional to 130,789.17, 180,543.90 and 88,405.11

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Solution

The fourth proportional to 130,789.17, 180,543.90 and 88,405.11 is: 122,036.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,789.17 : 180,543.90 = 88,405.11 : x
  2. Step 2: Convert to fraction form
    130,789.17/180,543.90 = 88,405.11/x
  3. Step 3: Cross multiply
    130,789.17x = 180,543.90 × 88,405.11
  4. Step 4: Simplify right side
    130,789.17x = 15,961,003,339.33
  5. Step 5: Solve for x
    x = 15,961,003,339.33/130,789.17
  6. Step 6: Final answer
    x = 122,036.12

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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.