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Finding the Fourth Proportional to 132,068.80, 197,728.80 and 102,539.20

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Solution

The fourth proportional to 132,068.80, 197,728.80 and 102,539.20 is: 153,518.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,068.80 : 197,728.80 = 102,539.20 : x
  2. Step 2: Convert to fraction form
    132,068.80/197,728.80 = 102,539.20/x
  3. Step 3: Cross multiply
    132,068.80x = 197,728.80 × 102,539.20
  4. Step 4: Simplify right side
    132,068.80x = 20,274,952,968.96
  5. Step 5: Solve for x
    x = 20,274,952,968.96/132,068.80
  6. Step 6: Final answer
    x = 153,518.11

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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.