Home / 90,813.11-136,218.30-40,857.93

Finding the Fourth Proportional to 90,813.11, 136,218.30 and 40,857.93

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Solution

The fourth proportional to 90,813.11, 136,218.30 and 40,857.93 is: 61,286.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,813.11 : 136,218.30 = 40,857.93 : x
  2. Step 2: Convert to fraction form
    90,813.11/136,218.30 = 40,857.93/x
  3. Step 3: Cross multiply
    90,813.11x = 136,218.30 × 40,857.93
  4. Step 4: Simplify right side
    90,813.11x = 5,565,597,561.83
  5. Step 5: Solve for x
    x = 5,565,597,561.83/90,813.11
  6. Step 6: Final answer
    x = 61,286.28

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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.