Home / 121,207.34-167,280.80-69,543.36

Finding the Fourth Proportional to 121,207.34, 167,280.80 and 69,543.36

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Solution

The fourth proportional to 121,207.34, 167,280.80 and 69,543.36 is: 95,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,207.34 : 167,280.80 = 69,543.36 : x
  2. Step 2: Convert to fraction form
    121,207.34/167,280.80 = 69,543.36/x
  3. Step 3: Cross multiply
    121,207.34x = 167,280.80 × 69,543.36
  4. Step 4: Simplify right side
    121,207.34x = 11,633,268,895.49
  5. Step 5: Solve for x
    x = 11,633,268,895.49/121,207.34
  6. Step 6: Final answer
    x = 95,978.25

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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.