Home / 156,750.12-216,381.31-105,831.78

Finding the Fourth Proportional to 156,750.12, 216,381.31 and 105,831.78

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Solution

The fourth proportional to 156,750.12, 216,381.31 and 105,831.78 is: 146,092.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,750.12 : 216,381.31 = 105,831.78 : x
  2. Step 2: Convert to fraction form
    156,750.12/216,381.31 = 105,831.78/x
  3. Step 3: Cross multiply
    156,750.12x = 216,381.31 × 105,831.78
  4. Step 4: Simplify right side
    156,750.12x = 22,900,019,196.03
  5. Step 5: Solve for x
    x = 22,900,019,196.03/156,750.12
  6. Step 6: Final answer
    x = 146,092.51

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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.