Home / 91,562.20-137,130.06-89,039.78

Finding the Fourth Proportional to 91,562.20, 137,130.06 and 89,039.78

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Solution

The fourth proportional to 91,562.20, 137,130.06 and 89,039.78 is: 133,352.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,562.20 : 137,130.06 = 89,039.78 : x
  2. Step 2: Convert to fraction form
    91,562.20/137,130.06 = 89,039.78/x
  3. Step 3: Cross multiply
    91,562.20x = 137,130.06 × 89,039.78
  4. Step 4: Simplify right side
    91,562.20x = 12,210,030,373.79
  5. Step 5: Solve for x
    x = 12,210,030,373.79/91,562.20
  6. Step 6: Final answer
    x = 133,352.30

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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.