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Finding the Fourth Proportional to 161,788.88, 223,275.57 and 90,168.90

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Solution

The fourth proportional to 161,788.88, 223,275.57 and 90,168.90 is: 124,436.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,788.88 : 223,275.57 = 90,168.90 : x
  2. Step 2: Convert to fraction form
    161,788.88/223,275.57 = 90,168.90/x
  3. Step 3: Cross multiply
    161,788.88x = 223,275.57 × 90,168.90
  4. Step 4: Simplify right side
    161,788.88x = 20,132,512,534.46
  5. Step 5: Solve for x
    x = 20,132,512,534.46/161,788.88
  6. Step 6: Final answer
    x = 124,436.94

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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.