Home / 121,145.08-167,171.88-75,821.16

Finding the Fourth Proportional to 121,145.08, 167,171.88 and 75,821.16

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Solution

The fourth proportional to 121,145.08, 167,171.88 and 75,821.16 is: 104,627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,145.08 : 167,171.88 = 75,821.16 : x
  2. Step 2: Convert to fraction form
    121,145.08/167,171.88 = 75,821.16/x
  3. Step 3: Cross multiply
    121,145.08x = 167,171.88 × 75,821.16
  4. Step 4: Simplify right side
    121,145.08x = 12,675,165,860.98
  5. Step 5: Solve for x
    x = 12,675,165,860.98/121,145.08
  6. Step 6: Final answer
    x = 104,627.99

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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.