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Finding the Fourth Proportional to 167,641.60, 231,348.16 and 91,162.21

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Solution

The fourth proportional to 167,641.60, 231,348.16 and 91,162.21 is: 125,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,641.60 : 231,348.16 = 91,162.21 : x
  2. Step 2: Convert to fraction form
    167,641.60/231,348.16 = 91,162.21/x
  3. Step 3: Cross multiply
    167,641.60x = 231,348.16 × 91,162.21
  4. Step 4: Simplify right side
    167,641.60x = 21,090,209,908.67
  5. Step 5: Solve for x
    x = 21,090,209,908.67/167,641.60
  6. Step 6: Final answer
    x = 125,805.35

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1.5x scale

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.