Home / 121,066.47-167,077.11-100,889.55

Finding the Fourth Proportional to 121,066.47, 167,077.11 and 100,889.55

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Solution

The fourth proportional to 121,066.47, 167,077.11 and 100,889.55 is: 139,232.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,066.47 : 167,077.11 = 100,889.55 : x
  2. Step 2: Convert to fraction form
    121,066.47/167,077.11 = 100,889.55/x
  3. Step 3: Cross multiply
    121,066.47x = 167,077.11 × 100,889.55
  4. Step 4: Simplify right side
    121,066.47x = 16,856,334,443.20
  5. Step 5: Solve for x
    x = 16,856,334,443.20/121,066.47
  6. Step 6: Final answer
    x = 139,232.06

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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.