Home / 99,310.12-137,039.86-58,467.80

Finding the Fourth Proportional to 99,310.12, 137,039.86 and 58,467.80

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Solution

The fourth proportional to 99,310.12, 137,039.86 and 58,467.80 is: 80,680.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,310.12 : 137,039.86 = 58,467.80 : x
  2. Step 2: Convert to fraction form
    99,310.12/137,039.86 = 58,467.80/x
  3. Step 3: Cross multiply
    99,310.12x = 137,039.86 × 58,467.80
  4. Step 4: Simplify right side
    99,310.12x = 8,012,419,126.51
  5. Step 5: Solve for x
    x = 8,012,419,126.51/99,310.12
  6. Step 6: Final answer
    x = 80,680.79

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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.