Home / 99,931.76-137,904.14-54,608.75

Finding the Fourth Proportional to 99,931.76, 137,904.14 and 54,608.75

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Solution

The fourth proportional to 99,931.76, 137,904.14 and 54,608.75 is: 75,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,931.76 : 137,904.14 = 54,608.75 : x
  2. Step 2: Convert to fraction form
    99,931.76/137,904.14 = 54,608.75/x
  3. Step 3: Cross multiply
    99,931.76x = 137,904.14 × 54,608.75
  4. Step 4: Simplify right side
    99,931.76x = 7,530,771,742.66
  5. Step 5: Solve for x
    x = 7,530,771,742.66/99,931.76
  6. Step 6: Final answer
    x = 75,359.15

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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.