Home / 121,986.54-183,189.20-74,878.26

Finding the Fourth Proportional to 121,986.54, 183,189.20 and 74,878.26

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Solution

The fourth proportional to 121,986.54, 183,189.20 and 74,878.26 is: 112,445.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,986.54 : 183,189.20 = 74,878.26 : x
  2. Step 2: Convert to fraction form
    121,986.54/183,189.20 = 74,878.26/x
  3. Step 3: Cross multiply
    121,986.54x = 183,189.20 × 74,878.26
  4. Step 4: Simplify right side
    121,986.54x = 13,716,888,546.79
  5. Step 5: Solve for x
    x = 13,716,888,546.79/121,986.54
  6. Step 6: Final answer
    x = 112,445.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.