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Finding the Fourth Proportional to 171,352.26, 256,875.80 and 81,339.44

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Solution

The fourth proportional to 171,352.26, 256,875.80 and 81,339.44 is: 121,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,352.26 : 256,875.80 = 81,339.44 : x
  2. Step 2: Convert to fraction form
    171,352.26/256,875.80 = 81,339.44/x
  3. Step 3: Cross multiply
    171,352.26x = 256,875.80 × 81,339.44
  4. Step 4: Simplify right side
    171,352.26x = 20,894,132,030.48
  5. Step 5: Solve for x
    x = 20,894,132,030.48/171,352.26
  6. Step 6: Final answer
    x = 121,936.72

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1.5x scale

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.