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Finding the Fourth Proportional to 88,826.70, 133,312.95 and 85,910.70

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Solution

The fourth proportional to 88,826.70, 133,312.95 and 85,910.70 is: 128,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,826.70 : 133,312.95 = 85,910.70 : x
  2. Step 2: Convert to fraction form
    88,826.70/133,312.95 = 85,910.70/x
  3. Step 3: Cross multiply
    88,826.70x = 133,312.95 × 85,910.70
  4. Step 4: Simplify right side
    88,826.70x = 11,453,008,853.57
  5. Step 5: Solve for x
    x = 11,453,008,853.57/88,826.70
  6. Step 6: Final answer
    x = 128,936.56

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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.