Home / 96,981.48-145,447.92-68,819.40

Finding the Fourth Proportional to 96,981.48, 145,447.92 and 68,819.40

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Solution

The fourth proportional to 96,981.48, 145,447.92 and 68,819.40 is: 103,211.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,981.48 : 145,447.92 = 68,819.40 : x
  2. Step 2: Convert to fraction form
    96,981.48/145,447.92 = 68,819.40/x
  3. Step 3: Cross multiply
    96,981.48x = 145,447.92 × 68,819.40
  4. Step 4: Simplify right side
    96,981.48x = 10,009,638,585.65
  5. Step 5: Solve for x
    x = 10,009,638,585.65/96,981.48
  6. Step 6: Final answer
    x = 103,211.86

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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.