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Finding the Fourth Proportional to 89,215.70, 133,823.55 and 87,833.30

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Solution

The fourth proportional to 89,215.70, 133,823.55 and 87,833.30 is: 131,749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,215.70 : 133,823.55 = 87,833.30 : x
  2. Step 2: Convert to fraction form
    89,215.70/133,823.55 = 87,833.30/x
  3. Step 3: Cross multiply
    89,215.70x = 133,823.55 × 87,833.30
  4. Step 4: Simplify right side
    89,215.70x = 11,754,164,014.22
  5. Step 5: Solve for x
    x = 11,754,164,014.22/89,215.70
  6. Step 6: Final answer
    x = 131,749.95

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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.