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Finding the Fourth Proportional to 132,830.40, 199,342.80 and 88,442.40

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Solution

The fourth proportional to 132,830.40, 199,342.80 and 88,442.40 is: 132,728.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,830.40 : 199,342.80 = 88,442.40 : x
  2. Step 2: Convert to fraction form
    132,830.40/199,342.80 = 88,442.40/x
  3. Step 3: Cross multiply
    132,830.40x = 199,342.80 × 88,442.40
  4. Step 4: Simplify right side
    132,830.40x = 17,630,355,654.72
  5. Step 5: Solve for x
    x = 17,630,355,654.72/132,830.40
  6. Step 6: Final answer
    x = 132,728.32

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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.