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Finding the Fourth Proportional to 132,388.80, 198,410.40 and 53,438.40

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Solution

The fourth proportional to 132,388.80, 198,410.40 and 53,438.40 is: 80,087.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,388.80 : 198,410.40 = 53,438.40 : x
  2. Step 2: Convert to fraction form
    132,388.80/198,410.40 = 53,438.40/x
  3. Step 3: Cross multiply
    132,388.80x = 198,410.40 × 53,438.40
  4. Step 4: Simplify right side
    132,388.80x = 10,602,734,319.36
  5. Step 5: Solve for x
    x = 10,602,734,319.36/132,388.80
  6. Step 6: Final answer
    x = 80,087.85

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1.5x scale

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.