Home / 122,517.12-169,089.28-74,760.32

Finding the Fourth Proportional to 122,517.12, 169,089.28 and 74,760.32

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Solution

The fourth proportional to 122,517.12, 169,089.28 and 74,760.32 is: 103,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,517.12 : 169,089.28 = 74,760.32 : x
  2. Step 2: Convert to fraction form
    122,517.12/169,089.28 = 74,760.32/x
  3. Step 3: Cross multiply
    122,517.12x = 169,089.28 × 74,760.32
  4. Step 4: Simplify right side
    122,517.12x = 12,641,168,681.37
  5. Step 5: Solve for x
    x = 12,641,168,681.37/122,517.12
  6. Step 6: Final answer
    x = 103,178.79

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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.