Home / 120,831.70-181,247.55-76,654.30

Finding the Fourth Proportional to 120,831.70, 181,247.55 and 76,654.30

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Solution

The fourth proportional to 120,831.70, 181,247.55 and 76,654.30 is: 114,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,831.70 : 181,247.55 = 76,654.30 : x
  2. Step 2: Convert to fraction form
    120,831.70/181,247.55 = 76,654.30/x
  3. Step 3: Cross multiply
    120,831.70x = 181,247.55 × 76,654.30
  4. Step 4: Simplify right side
    120,831.70x = 13,893,404,071.97
  5. Step 5: Solve for x
    x = 13,893,404,071.97/120,831.70
  6. Step 6: Final answer
    x = 114,981.45

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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.