Home / 89,739.90-134,719.20-89,083.80

Finding the Fourth Proportional to 89,739.90, 134,719.20 and 89,083.80

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Solution

The fourth proportional to 89,739.90, 134,719.20 and 89,083.80 is: 133,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,739.90 : 134,719.20 = 89,083.80 : x
  2. Step 2: Convert to fraction form
    89,739.90/134,719.20 = 89,083.80/x
  3. Step 3: Cross multiply
    89,739.90x = 134,719.20 × 89,083.80
  4. Step 4: Simplify right side
    89,739.90x = 12,001,298,268.96
  5. Step 5: Solve for x
    x = 12,001,298,268.96/89,739.90
  6. Step 6: Final answer
    x = 133,734.25

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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.