Home / 121,131.75-167,154.95-66,682.74

Finding the Fourth Proportional to 121,131.75, 167,154.95 and 66,682.74

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Solution

The fourth proportional to 121,131.75, 167,154.95 and 66,682.74 is: 92,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,131.75 : 167,154.95 = 66,682.74 : x
  2. Step 2: Convert to fraction form
    121,131.75/167,154.95 = 66,682.74/x
  3. Step 3: Cross multiply
    121,131.75x = 167,154.95 × 66,682.74
  4. Step 4: Simplify right side
    121,131.75x = 11,146,350,237.27
  5. Step 5: Solve for x
    x = 11,146,350,237.27/121,131.75
  6. Step 6: Final answer
    x = 92,018.40

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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.