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Finding the Fourth Proportional to 162,920.87, 224,819.39 and 90,323.09

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Solution

The fourth proportional to 162,920.87, 224,819.39 and 90,323.09 is: 124,639.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,920.87 : 224,819.39 = 90,323.09 : x
  2. Step 2: Convert to fraction form
    162,920.87/224,819.39 = 90,323.09/x
  3. Step 3: Cross multiply
    162,920.87x = 224,819.39 × 90,323.09
  4. Step 4: Simplify right side
    162,920.87x = 20,306,380,421.00
  5. Step 5: Solve for x
    x = 20,306,380,421.00/162,920.87
  6. Step 6: Final answer
    x = 124,639.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.