Home / 105,909.12-159,039.36-88,513.92

Finding the Fourth Proportional to 105,909.12, 159,039.36 and 88,513.92

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Solution

The fourth proportional to 105,909.12, 159,039.36 and 88,513.92 is: 132,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,909.12 : 159,039.36 = 88,513.92 : x
  2. Step 2: Convert to fraction form
    105,909.12/159,039.36 = 88,513.92/x
  3. Step 3: Cross multiply
    105,909.12x = 159,039.36 × 88,513.92
  4. Step 4: Simplify right side
    105,909.12x = 14,077,197,187.89
  5. Step 5: Solve for x
    x = 14,077,197,187.89/105,909.12
  6. Step 6: Final answer
    x = 132,917.71

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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.