Home / 99,589.47-137,431.68-54,267.84

Finding the Fourth Proportional to 99,589.47, 137,431.68 and 54,267.84

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Solution

The fourth proportional to 99,589.47, 137,431.68 and 54,267.84 is: 74,888.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,589.47 : 137,431.68 = 54,267.84 : x
  2. Step 2: Convert to fraction form
    99,589.47/137,431.68 = 54,267.84/x
  3. Step 3: Cross multiply
    99,589.47x = 137,431.68 × 54,267.84
  4. Step 4: Simplify right side
    99,589.47x = 7,458,120,421.17
  5. Step 5: Solve for x
    x = 7,458,120,421.17/99,589.47
  6. Step 6: Final answer
    x = 74,888.64

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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.