Home / 91,159.34-136,721.70-38,605.72

Finding the Fourth Proportional to 91,159.34, 136,721.70 and 38,605.72

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Solution

The fourth proportional to 91,159.34, 136,721.70 and 38,605.72 is: 57,901.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,159.34 : 136,721.70 = 38,605.72 : x
  2. Step 2: Convert to fraction form
    91,159.34/136,721.70 = 38,605.72/x
  3. Step 3: Cross multiply
    91,159.34x = 136,721.70 × 38,605.72
  4. Step 4: Simplify right side
    91,159.34x = 5,278,239,668.12
  5. Step 5: Solve for x
    x = 5,278,239,668.12/91,159.34
  6. Step 6: Final answer
    x = 57,901.25

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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.