Home / 99,765.48-137,672.04-54,442.32

Finding the Fourth Proportional to 99,765.48, 137,672.04 and 54,442.32

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Solution

The fourth proportional to 99,765.48, 137,672.04 and 54,442.32 is: 75,128.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,765.48 : 137,672.04 = 54,442.32 : x
  2. Step 2: Convert to fraction form
    99,765.48/137,672.04 = 54,442.32/x
  3. Step 3: Cross multiply
    99,765.48x = 137,672.04 × 54,442.32
  4. Step 4: Simplify right side
    99,765.48x = 7,495,185,256.73
  5. Step 5: Solve for x
    x = 7,495,185,256.73/99,765.48
  6. Step 6: Final answer
    x = 75,128.04

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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.