Home / 155,419.65-214,478.82-87,436.71

Finding the Fourth Proportional to 155,419.65, 214,478.82 and 87,436.71

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Solution

The fourth proportional to 155,419.65, 214,478.82 and 87,436.71 is: 120,662.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,419.65 : 214,478.82 = 87,436.71 : x
  2. Step 2: Convert to fraction form
    155,419.65/214,478.82 = 87,436.71/x
  3. Step 3: Cross multiply
    155,419.65x = 214,478.82 × 87,436.71
  4. Step 4: Simplify right side
    155,419.65x = 18,753,322,385.48
  5. Step 5: Solve for x
    x = 18,753,322,385.48/155,419.65
  6. Step 6: Final answer
    x = 120,662.49

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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.