Home / 105,387.52-157,945.42-91,823.71

Finding the Fourth Proportional to 105,387.52, 157,945.42 and 91,823.71

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Solution

The fourth proportional to 105,387.52, 157,945.42 and 91,823.71 is: 137,617.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,387.52 : 157,945.42 = 91,823.71 : x
  2. Step 2: Convert to fraction form
    105,387.52/157,945.42 = 91,823.71/x
  3. Step 3: Cross multiply
    105,387.52x = 157,945.42 × 91,823.71
  4. Step 4: Simplify right side
    105,387.52x = 14,503,134,441.91
  5. Step 5: Solve for x
    x = 14,503,134,441.91/105,387.52
  6. Step 6: Final answer
    x = 137,617.19

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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.