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Finding the Fourth Proportional to 132,130.80, 197,758.80 and 102,387.60

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Solution

The fourth proportional to 132,130.80, 197,758.80 and 102,387.60 is: 153,242.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,130.80 : 197,758.80 = 102,387.60 : x
  2. Step 2: Convert to fraction form
    132,130.80/197,758.80 = 102,387.60/x
  3. Step 3: Cross multiply
    132,130.80x = 197,758.80 × 102,387.60
  4. Step 4: Simplify right side
    132,130.80x = 20,248,048,910.88
  5. Step 5: Solve for x
    x = 20,248,048,910.88/132,130.80
  6. Step 6: Final answer
    x = 153,242.46

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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.