Home / 142,819.08-213,963.75-71,658.15

Finding the Fourth Proportional to 142,819.08, 213,963.75 and 71,658.15

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Solution

The fourth proportional to 142,819.08, 213,963.75 and 71,658.15 is: 107,354.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,819.08 : 213,963.75 = 71,658.15 : x
  2. Step 2: Convert to fraction form
    142,819.08/213,963.75 = 71,658.15/x
  3. Step 3: Cross multiply
    142,819.08x = 213,963.75 × 71,658.15
  4. Step 4: Simplify right side
    142,819.08x = 15,332,246,492.06
  5. Step 5: Solve for x
    x = 15,332,246,492.06/142,819.08
  6. Step 6: Final answer
    x = 107,354.33

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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.