Home / 91,815.70-137,723.55-87,927.70

Finding the Fourth Proportional to 91,815.70, 137,723.55 and 87,927.70

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Solution

The fourth proportional to 91,815.70, 137,723.55 and 87,927.70 is: 131,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,815.70 : 137,723.55 = 87,927.70 : x
  2. Step 2: Convert to fraction form
    91,815.70/137,723.55 = 87,927.70/x
  3. Step 3: Cross multiply
    91,815.70x = 137,723.55 × 87,927.70
  4. Step 4: Simplify right side
    91,815.70x = 12,109,714,987.34
  5. Step 5: Solve for x
    x = 12,109,714,987.34/91,815.70
  6. Step 6: Final answer
    x = 131,891.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.