Home / 123,278.96-170,123.29-68,831.96

Finding the Fourth Proportional to 123,278.96, 170,123.29 and 68,831.96

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Solution

The fourth proportional to 123,278.96, 170,123.29 and 68,831.96 is: 94,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,278.96 : 170,123.29 = 68,831.96 : x
  2. Step 2: Convert to fraction form
    123,278.96/170,123.29 = 68,831.96/x
  3. Step 3: Cross multiply
    123,278.96x = 170,123.29 × 68,831.96
  4. Step 4: Simplify right side
    123,278.96x = 11,709,920,197.29
  5. Step 5: Solve for x
    x = 11,709,920,197.29/123,278.96
  6. Step 6: Final answer
    x = 94,987.18

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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.