Home / 99,420.68-137,198.29-54,098.79

Finding the Fourth Proportional to 99,420.68, 137,198.29 and 54,098.79

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Solution

The fourth proportional to 99,420.68, 137,198.29 and 54,098.79 is: 74,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,420.68 : 137,198.29 = 54,098.79 : x
  2. Step 2: Convert to fraction form
    99,420.68/137,198.29 = 54,098.79/x
  3. Step 3: Cross multiply
    99,420.68x = 137,198.29 × 54,098.79
  4. Step 4: Simplify right side
    99,420.68x = 7,422,261,158.99
  5. Step 5: Solve for x
    x = 7,422,261,158.99/99,420.68
  6. Step 6: Final answer
    x = 74,655.10

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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.