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Finding the Fourth Proportional to 132,058.40, 198,111.60 and 43,287.20

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Solution

The fourth proportional to 132,058.40, 198,111.60 and 43,287.20 is: 64,938.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,058.40 : 198,111.60 = 43,287.20 : x
  2. Step 2: Convert to fraction form
    132,058.40/198,111.60 = 43,287.20/x
  3. Step 3: Cross multiply
    132,058.40x = 198,111.60 × 43,287.20
  4. Step 4: Simplify right side
    132,058.40x = 8,575,696,451.52
  5. Step 5: Solve for x
    x = 8,575,696,451.52/132,058.40
  6. Step 6: Final answer
    x = 64,938.67

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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.