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Finding the Fourth Proportional to 151,718.80, 209,338.44 and 88,019.68

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Solution

The fourth proportional to 151,718.80, 209,338.44 and 88,019.68 is: 121,447.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,718.80 : 209,338.44 = 88,019.68 : x
  2. Step 2: Convert to fraction form
    151,718.80/209,338.44 = 88,019.68/x
  3. Step 3: Cross multiply
    151,718.80x = 209,338.44 × 88,019.68
  4. Step 4: Simplify right side
    151,718.80x = 18,425,902,500.50
  5. Step 5: Solve for x
    x = 18,425,902,500.50/151,718.80
  6. Step 6: Final answer
    x = 121,447.72

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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.