Home / 105,151.20-157,381.20-81,650.40

Finding the Fourth Proportional to 105,151.20, 157,381.20 and 81,650.40

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Solution

The fourth proportional to 105,151.20, 157,381.20 and 81,650.40 is: 122,207.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,151.20 : 157,381.20 = 81,650.40 : x
  2. Step 2: Convert to fraction form
    105,151.20/157,381.20 = 81,650.40/x
  3. Step 3: Cross multiply
    105,151.20x = 157,381.20 × 81,650.40
  4. Step 4: Simplify right side
    105,151.20x = 12,850,237,932.48
  5. Step 5: Solve for x
    x = 12,850,237,932.48/105,151.20
  6. Step 6: Final answer
    x = 122,207.24

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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.