Home / 130,531.34-180,129.75-76,819.52

Finding the Fourth Proportional to 130,531.34, 180,129.75 and 76,819.52

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Solution

The fourth proportional to 130,531.34, 180,129.75 and 76,819.52 is: 106,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,531.34 : 180,129.75 = 76,819.52 : x
  2. Step 2: Convert to fraction form
    130,531.34/180,129.75 = 76,819.52/x
  3. Step 3: Cross multiply
    130,531.34x = 180,129.75 × 76,819.52
  4. Step 4: Simplify right side
    130,531.34x = 13,837,480,932.72
  5. Step 5: Solve for x
    x = 13,837,480,932.72/130,531.34
  6. Step 6: Final answer
    x = 106,008.88

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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.