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Finding the Fourth Proportional to 162,171, 223,769.28 and 90,539.52

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Solution

The fourth proportional to 162,171, 223,769.28 and 90,539.52 is: 124,929.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,171 : 223,769.28 = 90,539.52 : x
  2. Step 2: Convert to fraction form
    162,171/223,769.28 = 90,539.52/x
  3. Step 3: Cross multiply
    162,171x = 223,769.28 × 90,539.52
  4. Step 4: Simplify right side
    162,171x = 20,259,963,201.95
  5. Step 5: Solve for x
    x = 20,259,963,201.95/162,171
  6. Step 6: Final answer
    x = 124,929.63

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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.