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Finding the Fourth Proportional to 122,129.52, 168,589.56 and 83,943.84

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Solution

The fourth proportional to 122,129.52, 168,589.56 and 83,943.84 is: 115,877.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,129.52 : 168,589.56 = 83,943.84 : x
  2. Step 2: Convert to fraction form
    122,129.52/168,589.56 = 83,943.84/x
  3. Step 3: Cross multiply
    122,129.52x = 168,589.56 × 83,943.84
  4. Step 4: Simplify right side
    122,129.52x = 14,152,055,050.31
  5. Step 5: Solve for x
    x = 14,152,055,050.31/122,129.52
  6. Step 6: Final answer
    x = 115,877.43

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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.