Home / 115,141.12-158,804.70-74,867.92

Finding the Fourth Proportional to 115,141.12, 158,804.70 and 74,867.92

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Solution

The fourth proportional to 115,141.12, 158,804.70 and 74,867.92 is: 103,259.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,141.12 : 158,804.70 = 74,867.92 : x
  2. Step 2: Convert to fraction form
    115,141.12/158,804.70 = 74,867.92/x
  3. Step 3: Cross multiply
    115,141.12x = 158,804.70 × 74,867.92
  4. Step 4: Simplify right side
    115,141.12x = 11,889,377,575.22
  5. Step 5: Solve for x
    x = 11,889,377,575.22/115,141.12
  6. Step 6: Final answer
    x = 103,259.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.