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Finding the Fourth Proportional to 121,089.78, 167,014.53 and 83,376.18

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Solution

The fourth proportional to 121,089.78, 167,014.53 and 83,376.18 is: 114,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,089.78 : 167,014.53 = 83,376.18 : x
  2. Step 2: Convert to fraction form
    121,089.78/167,014.53 = 83,376.18/x
  3. Step 3: Cross multiply
    121,089.78x = 167,014.53 × 83,376.18
  4. Step 4: Simplify right side
    121,089.78x = 13,925,033,515.90
  5. Step 5: Solve for x
    x = 13,925,033,515.90/121,089.78
  6. Step 6: Final answer
    x = 114,997.60

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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.