Home / 121,455.19-167,521.39-105,293.60

Finding the Fourth Proportional to 121,455.19, 167,521.39 and 105,293.60

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Solution

The fourth proportional to 121,455.19, 167,521.39 and 105,293.60 is: 145,229.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,455.19 : 167,521.39 = 105,293.60 : x
  2. Step 2: Convert to fraction form
    121,455.19/167,521.39 = 105,293.60/x
  3. Step 3: Cross multiply
    121,455.19x = 167,521.39 × 105,293.60
  4. Step 4: Simplify right side
    121,455.19x = 17,638,930,230.10
  5. Step 5: Solve for x
    x = 17,638,930,230.10/121,455.19
  6. Step 6: Final answer
    x = 145,229.94

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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.