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Finding the Fourth Proportional to 162,011.76, 223,575.92 and 90,387.52

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Solution

The fourth proportional to 162,011.76, 223,575.92 and 90,387.52 is: 124,734.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,011.76 : 223,575.92 = 90,387.52 : x
  2. Step 2: Convert to fraction form
    162,011.76/223,575.92 = 90,387.52/x
  3. Step 3: Cross multiply
    162,011.76x = 223,575.92 × 90,387.52
  4. Step 4: Simplify right side
    162,011.76x = 20,208,472,940.52
  5. Step 5: Solve for x
    x = 20,208,472,940.52/162,011.76
  6. Step 6: Final answer
    x = 124,734.61

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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.