Home / 130,575.05-180,127.23-85,279.56

Finding the Fourth Proportional to 130,575.05, 180,127.23 and 85,279.56

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Solution

The fourth proportional to 130,575.05, 180,127.23 and 85,279.56 is: 117,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,575.05 : 180,127.23 = 85,279.56 : x
  2. Step 2: Convert to fraction form
    130,575.05/180,127.23 = 85,279.56/x
  3. Step 3: Cross multiply
    130,575.05x = 180,127.23 × 85,279.56
  4. Step 4: Simplify right side
    130,575.05x = 15,361,170,918.42
  5. Step 5: Solve for x
    x = 15,361,170,918.42/130,575.05
  6. Step 6: Final answer
    x = 117,642.47

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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.