Home / 121,312.22-167,408.62-66,122.02

Finding the Fourth Proportional to 121,312.22, 167,408.62 and 66,122.02

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Solution

The fourth proportional to 121,312.22, 167,408.62 and 66,122.02 is: 91,247.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,312.22 : 167,408.62 = 66,122.02 : x
  2. Step 2: Convert to fraction form
    121,312.22/167,408.62 = 66,122.02/x
  3. Step 3: Cross multiply
    121,312.22x = 167,408.62 × 66,122.02
  4. Step 4: Simplify right side
    121,312.22x = 11,069,394,952.16
  5. Step 5: Solve for x
    x = 11,069,394,952.16/121,312.22
  6. Step 6: Final answer
    x = 91,247.16

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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.