Home / 99,774.36-137,688.05-54,452.20

Finding the Fourth Proportional to 99,774.36, 137,688.05 and 54,452.20

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Solution

The fourth proportional to 99,774.36, 137,688.05 and 54,452.20 is: 75,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,774.36 : 137,688.05 = 54,452.20 : x
  2. Step 2: Convert to fraction form
    99,774.36/137,688.05 = 54,452.20/x
  3. Step 3: Cross multiply
    99,774.36x = 137,688.05 × 54,452.20
  4. Step 4: Simplify right side
    99,774.36x = 7,497,417,286.29
  5. Step 5: Solve for x
    x = 7,497,417,286.29/99,774.36
  6. Step 6: Final answer
    x = 75,143.73

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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.