Home / 122,542.64-169,152.29-74,147.06

Finding the Fourth Proportional to 122,542.64, 169,152.29 and 74,147.06

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Solution

The fourth proportional to 122,542.64, 169,152.29 and 74,147.06 is: 102,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,542.64 : 169,152.29 = 74,147.06 : x
  2. Step 2: Convert to fraction form
    122,542.64/169,152.29 = 74,147.06/x
  3. Step 3: Cross multiply
    122,542.64x = 169,152.29 × 74,147.06
  4. Step 4: Simplify right side
    122,542.64x = 12,542,143,779.27
  5. Step 5: Solve for x
    x = 12,542,143,779.27/122,542.64
  6. Step 6: Final answer
    x = 102,349.23

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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.