Home / 91,991.15-137,711.70-56,340.22

Finding the Fourth Proportional to 91,991.15, 137,711.70 and 56,340.22

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Solution

The fourth proportional to 91,991.15, 137,711.70 and 56,340.22 is: 84,341.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,991.15 : 137,711.70 = 56,340.22 : x
  2. Step 2: Convert to fraction form
    91,991.15/137,711.70 = 56,340.22/x
  3. Step 3: Cross multiply
    91,991.15x = 137,711.70 × 56,340.22
  4. Step 4: Simplify right side
    91,991.15x = 7,758,707,130.29
  5. Step 5: Solve for x
    x = 7,758,707,130.29/91,991.15
  6. Step 6: Final answer
    x = 84,341.88

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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.