Home / 99,436.68-137,273.40-76,724.64

Finding the Fourth Proportional to 99,436.68, 137,273.40 and 76,724.64

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Solution

The fourth proportional to 99,436.68, 137,273.40 and 76,724.64 is: 105,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,436.68 : 137,273.40 = 76,724.64 : x
  2. Step 2: Convert to fraction form
    99,436.68/137,273.40 = 76,724.64/x
  3. Step 3: Cross multiply
    99,436.68x = 137,273.40 × 76,724.64
  4. Step 4: Simplify right side
    99,436.68x = 10,532,252,196.58
  5. Step 5: Solve for x
    x = 10,532,252,196.58/99,436.68
  6. Step 6: Final answer
    x = 105,919.19

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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.