Home / 130,531.30-180,128.94-76,819.25

Finding the Fourth Proportional to 130,531.30, 180,128.94 and 76,819.25

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Solution

The fourth proportional to 130,531.30, 180,128.94 and 76,819.25 is: 106,008.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,531.30 : 180,128.94 = 76,819.25 : x
  2. Step 2: Convert to fraction form
    130,531.30/180,128.94 = 76,819.25/x
  3. Step 3: Cross multiply
    130,531.30x = 180,128.94 × 76,819.25
  4. Step 4: Simplify right side
    130,531.30x = 13,837,370,074.10
  5. Step 5: Solve for x
    x = 13,837,370,074.10/130,531.30
  6. Step 6: Final answer
    x = 106,008.06

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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.