Home / 121,902.96-168,244.02-74,147.07

Finding the Fourth Proportional to 121,902.96, 168,244.02 and 74,147.07

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Solution

The fourth proportional to 121,902.96, 168,244.02 and 74,147.07 is: 102,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,902.96 : 168,244.02 = 74,147.07 : x
  2. Step 2: Convert to fraction form
    121,902.96/168,244.02 = 74,147.07/x
  3. Step 3: Cross multiply
    121,902.96x = 168,244.02 × 74,147.07
  4. Step 4: Simplify right side
    121,902.96x = 12,474,801,128.02
  5. Step 5: Solve for x
    x = 12,474,801,128.02/121,902.96
  6. Step 6: Final answer
    x = 102,333.87

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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.