Home / 121,719.60-182,579.40-71,823.60

Finding the Fourth Proportional to 121,719.60, 182,579.40 and 71,823.60

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Solution

The fourth proportional to 121,719.60, 182,579.40 and 71,823.60 is: 107,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,719.60 : 182,579.40 = 71,823.60 : x
  2. Step 2: Convert to fraction form
    121,719.60/182,579.40 = 71,823.60/x
  3. Step 3: Cross multiply
    121,719.60x = 182,579.40 × 71,823.60
  4. Step 4: Simplify right side
    121,719.60x = 13,113,509,793.84
  5. Step 5: Solve for x
    x = 13,113,509,793.84/121,719.60
  6. Step 6: Final answer
    x = 107,735.40

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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.