Home / 121,192.40-167,134.92-76,402.64

Finding the Fourth Proportional to 121,192.40, 167,134.92 and 76,402.64

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Solution

The fourth proportional to 121,192.40, 167,134.92 and 76,402.64 is: 105,365.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,192.40 : 167,134.92 = 76,402.64 : x
  2. Step 2: Convert to fraction form
    121,192.40/167,134.92 = 76,402.64/x
  3. Step 3: Cross multiply
    121,192.40x = 167,134.92 × 76,402.64
  4. Step 4: Simplify right side
    121,192.40x = 12,769,549,124.19
  5. Step 5: Solve for x
    x = 12,769,549,124.19/121,192.40
  6. Step 6: Final answer
    x = 105,365.92

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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.