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Finding the Fourth Proportional to 161,280.68, 222,574.88 and 89,661.80

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Solution

The fourth proportional to 161,280.68, 222,574.88 and 89,661.80 is: 123,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,280.68 : 222,574.88 = 89,661.80 : x
  2. Step 2: Convert to fraction form
    161,280.68/222,574.88 = 89,661.80/x
  3. Step 3: Cross multiply
    161,280.68x = 222,574.88 × 89,661.80
  4. Step 4: Simplify right side
    161,280.68x = 19,956,464,375.58
  5. Step 5: Solve for x
    x = 19,956,464,375.58/161,280.68
  6. Step 6: Final answer
    x = 123,737.48

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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.