Home / 99,715.08-137,607-54,393.12

Finding the Fourth Proportional to 99,715.08, 137,607 and 54,393.12

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Solution

The fourth proportional to 99,715.08, 137,607 and 54,393.12 is: 75,062.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,715.08 : 137,607 = 54,393.12 : x
  2. Step 2: Convert to fraction form
    99,715.08/137,607 = 54,393.12/x
  3. Step 3: Cross multiply
    99,715.08x = 137,607 × 54,393.12
  4. Step 4: Simplify right side
    99,715.08x = 7,484,874,063.84
  5. Step 5: Solve for x
    x = 7,484,874,063.84/99,715.08
  6. Step 6: Final answer
    x = 75,062.61

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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.