Home / 91,132.05-136,696.92-31,159.92

Finding the Fourth Proportional to 91,132.05, 136,696.92 and 31,159.92

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Solution

The fourth proportional to 91,132.05, 136,696.92 and 31,159.92 is: 46,739.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,132.05 : 136,696.92 = 31,159.92 : x
  2. Step 2: Convert to fraction form
    91,132.05/136,696.92 = 31,159.92/x
  3. Step 3: Cross multiply
    91,132.05x = 136,696.92 × 31,159.92
  4. Step 4: Simplify right side
    91,132.05x = 4,259,465,091.45
  5. Step 5: Solve for x
    x = 4,259,465,091.45/91,132.05
  6. Step 6: Final answer
    x = 46,739.49

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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.