Home / 156,749.62-216,380.62-105,831.28

Finding the Fourth Proportional to 156,749.62, 216,380.62 and 105,831.28

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Solution

The fourth proportional to 156,749.62, 216,380.62 and 105,831.28 is: 146,091.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.62 : 216,380.62 = 105,831.28 : x
  2. Step 2: Convert to fraction form
    156,749.62/216,380.62 = 105,831.28/x
  3. Step 3: Cross multiply
    156,749.62x = 216,380.62 × 105,831.28
  4. Step 4: Simplify right side
    156,749.62x = 22,899,837,981.79
  5. Step 5: Solve for x
    x = 22,899,837,981.79/156,749.62
  6. Step 6: Final answer
    x = 146,091.82

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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.