Home / 100,146.74-138,247.17-66,176.42

Finding the Fourth Proportional to 100,146.74, 138,247.17 and 66,176.42

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Solution

The fourth proportional to 100,146.74, 138,247.17 and 66,176.42 is: 91,352.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,146.74 : 138,247.17 = 66,176.42 : x
  2. Step 2: Convert to fraction form
    100,146.74/138,247.17 = 66,176.42/x
  3. Step 3: Cross multiply
    100,146.74x = 138,247.17 × 66,176.42
  4. Step 4: Simplify right side
    100,146.74x = 9,148,702,785.73
  5. Step 5: Solve for x
    x = 9,148,702,785.73/100,146.74
  6. Step 6: Final answer
    x = 91,352.98

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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.