Home / 100,218.56-138,285.36-59,948.96

Finding the Fourth Proportional to 100,218.56, 138,285.36 and 59,948.96

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Solution

The fourth proportional to 100,218.56, 138,285.36 and 59,948.96 is: 82,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,218.56 : 138,285.36 = 59,948.96 : x
  2. Step 2: Convert to fraction form
    100,218.56/138,285.36 = 59,948.96/x
  3. Step 3: Cross multiply
    100,218.56x = 138,285.36 × 59,948.96
  4. Step 4: Simplify right side
    100,218.56x = 8,290,063,515.23
  5. Step 5: Solve for x
    x = 8,290,063,515.23/100,218.56
  6. Step 6: Final answer
    x = 82,719.84

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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.