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Finding the Fourth Proportional to 162,329.88, 223,990.74 and 90,712.92

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Solution

The fourth proportional to 162,329.88, 223,990.74 and 90,712.92 is: 125,170.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,329.88 : 223,990.74 = 90,712.92 : x
  2. Step 2: Convert to fraction form
    162,329.88/223,990.74 = 90,712.92/x
  3. Step 3: Cross multiply
    162,329.88x = 223,990.74 × 90,712.92
  4. Step 4: Simplify right side
    162,329.88x = 20,318,854,078.36
  5. Step 5: Solve for x
    x = 20,318,854,078.36/162,329.88
  6. Step 6: Final answer
    x = 125,170.14

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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.