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Finding the Fourth Proportional to 121,458.31, 167,525.71 and 105,296.74

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Solution

The fourth proportional to 121,458.31, 167,525.71 and 105,296.74 is: 145,234.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,458.31 : 167,525.71 = 105,296.74 : x
  2. Step 2: Convert to fraction form
    121,458.31/167,525.71 = 105,296.74/x
  3. Step 3: Cross multiply
    121,458.31x = 167,525.71 × 105,296.74
  4. Step 4: Simplify right side
    121,458.31x = 17,639,910,447.13
  5. Step 5: Solve for x
    x = 17,639,910,447.13/121,458.31
  6. Step 6: Final answer
    x = 145,234.29

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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.