Home / 88,929.70-133,394.55-85,819.30

Finding the Fourth Proportional to 88,929.70, 133,394.55 and 85,819.30

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Solution

The fourth proportional to 88,929.70, 133,394.55 and 85,819.30 is: 128,728.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,929.70 : 133,394.55 = 85,819.30 : x
  2. Step 2: Convert to fraction form
    88,929.70/133,394.55 = 85,819.30/x
  3. Step 3: Cross multiply
    88,929.70x = 133,394.55 × 85,819.30
  4. Step 4: Simplify right side
    88,929.70x = 11,447,826,904.82
  5. Step 5: Solve for x
    x = 11,447,826,904.82/88,929.70
  6. Step 6: Final answer
    x = 128,728.95

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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.