Home / 148,790.11-205,334.36-87,540.57

Finding the Fourth Proportional to 148,790.11, 205,334.36 and 87,540.57

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Solution

The fourth proportional to 148,790.11, 205,334.36 and 87,540.57 is: 120,808.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,790.11 : 205,334.36 = 87,540.57 : x
  2. Step 2: Convert to fraction form
    148,790.11/205,334.36 = 87,540.57/x
  3. Step 3: Cross multiply
    148,790.11x = 205,334.36 × 87,540.57
  4. Step 4: Simplify right side
    148,790.11x = 17,975,086,477.28
  5. Step 5: Solve for x
    x = 17,975,086,477.28/148,790.11
  6. Step 6: Final answer
    x = 120,808.35

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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.