Home / 99,968.60-137,959.98-54,645.68

Finding the Fourth Proportional to 99,968.60, 137,959.98 and 54,645.68

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Solution

The fourth proportional to 99,968.60, 137,959.98 and 54,645.68 is: 75,412.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,968.60 : 137,959.98 = 54,645.68 : x
  2. Step 2: Convert to fraction form
    99,968.60/137,959.98 = 54,645.68/x
  3. Step 3: Cross multiply
    99,968.60x = 137,959.98 × 54,645.68
  4. Step 4: Simplify right side
    99,968.60x = 7,538,916,919.89
  5. Step 5: Solve for x
    x = 7,538,916,919.89/99,968.60
  6. Step 6: Final answer
    x = 75,412.85

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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.