Home / 99,856.14-137,924.82-72,589.65

Finding the Fourth Proportional to 99,856.14, 137,924.82 and 72,589.65

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Solution

The fourth proportional to 99,856.14, 137,924.82 and 72,589.65 is: 100,263.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856.14 : 137,924.82 = 72,589.65 : x
  2. Step 2: Convert to fraction form
    99,856.14/137,924.82 = 72,589.65/x
  3. Step 3: Cross multiply
    99,856.14x = 137,924.82 × 72,589.65
  4. Step 4: Simplify right side
    99,856.14x = 10,011,914,410.11
  5. Step 5: Solve for x
    x = 10,011,914,410.11/99,856.14
  6. Step 6: Final answer
    x = 100,263.38

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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.