Home / 130,808.26-180,549.92-77,129.04

Finding the Fourth Proportional to 130,808.26, 180,549.92 and 77,129.04

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Solution

The fourth proportional to 130,808.26, 180,549.92 and 77,129.04 is: 106,458.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,808.26 : 180,549.92 = 77,129.04 : x
  2. Step 2: Convert to fraction form
    130,808.26/180,549.92 = 77,129.04/x
  3. Step 3: Cross multiply
    130,808.26x = 180,549.92 × 77,129.04
  4. Step 4: Simplify right side
    130,808.26x = 13,925,642,001.68
  5. Step 5: Solve for x
    x = 13,925,642,001.68/130,808.26
  6. Step 6: Final answer
    x = 106,458.43

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1.5x scale

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.