Home / 90,586.85-135,901.74-89,080.66

Finding the Fourth Proportional to 90,586.85, 135,901.74 and 89,080.66

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Solution

The fourth proportional to 90,586.85, 135,901.74 and 89,080.66 is: 133,642.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,586.85 : 135,901.74 = 89,080.66 : x
  2. Step 2: Convert to fraction form
    90,586.85/135,901.74 = 89,080.66/x
  3. Step 3: Cross multiply
    90,586.85x = 135,901.74 × 89,080.66
  4. Step 4: Simplify right side
    90,586.85x = 12,106,216,014.84
  5. Step 5: Solve for x
    x = 12,106,216,014.84/90,586.85
  6. Step 6: Final answer
    x = 133,642.09

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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.