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Finding the Fourth Proportional to 158,339.97, 218,509.47 and 85,743.66

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Solution

The fourth proportional to 158,339.97, 218,509.47 and 85,743.66 is: 118,326.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,339.97 : 218,509.47 = 85,743.66 : x
  2. Step 2: Convert to fraction form
    158,339.97/218,509.47 = 85,743.66/x
  3. Step 3: Cross multiply
    158,339.97x = 218,509.47 × 85,743.66
  4. Step 4: Simplify right side
    158,339.97x = 18,735,801,702.46
  5. Step 5: Solve for x
    x = 18,735,801,702.46/158,339.97
  6. Step 6: Final answer
    x = 118,326.42

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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.