Home / 155,281.39-214,287.03-87,298.66

Finding the Fourth Proportional to 155,281.39, 214,287.03 and 87,298.66

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Solution

The fourth proportional to 155,281.39, 214,287.03 and 87,298.66 is: 120,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,281.39 : 214,287.03 = 87,298.66 : x
  2. Step 2: Convert to fraction form
    155,281.39/214,287.03 = 87,298.66/x
  3. Step 3: Cross multiply
    155,281.39x = 214,287.03 × 87,298.66
  4. Step 4: Simplify right side
    155,281.39x = 18,706,970,574.38
  5. Step 5: Solve for x
    x = 18,706,970,574.38/155,281.39
  6. Step 6: Final answer
    x = 120,471.43

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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.