Home / 121,643.12-167,865.92-67,929.08

Finding the Fourth Proportional to 121,643.12, 167,865.92 and 67,929.08

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Solution

The fourth proportional to 121,643.12, 167,865.92 and 67,929.08 is: 93,741.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,643.12 : 167,865.92 = 67,929.08 : x
  2. Step 2: Convert to fraction form
    121,643.12/167,865.92 = 67,929.08/x
  3. Step 3: Cross multiply
    121,643.12x = 167,865.92 × 67,929.08
  4. Step 4: Simplify right side
    121,643.12x = 11,402,977,508.95
  5. Step 5: Solve for x
    x = 11,402,977,508.95/121,643.12
  6. Step 6: Final answer
    x = 93,741.24

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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.