Home / 121,178.10-167,220.37-69,458.12

Finding the Fourth Proportional to 121,178.10, 167,220.37 and 69,458.12

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Solution

The fourth proportional to 121,178.10, 167,220.37 and 69,458.12 is: 95,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,178.10 : 167,220.37 = 69,458.12 : x
  2. Step 2: Convert to fraction form
    121,178.10/167,220.37 = 69,458.12/x
  3. Step 3: Cross multiply
    121,178.10x = 167,220.37 × 69,458.12
  4. Step 4: Simplify right side
    121,178.10x = 11,614,812,525.90
  5. Step 5: Solve for x
    x = 11,614,812,525.90/121,178.10
  6. Step 6: Final answer
    x = 95,849.11

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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.