Home / 154,355.17-231,574.31-79,434.49

Finding the Fourth Proportional to 154,355.17, 231,574.31 and 79,434.49

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Solution

The fourth proportional to 154,355.17, 231,574.31 and 79,434.49 is: 119,173.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,355.17 : 231,574.31 = 79,434.49 : x
  2. Step 2: Convert to fraction form
    154,355.17/231,574.31 = 79,434.49/x
  3. Step 3: Cross multiply
    154,355.17x = 231,574.31 × 79,434.49
  4. Step 4: Simplify right side
    154,355.17x = 18,394,986,831.60
  5. Step 5: Solve for x
    x = 18,394,986,831.60/154,355.17
  6. Step 6: Final answer
    x = 119,173.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.