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Finding the Fourth Proportional to 132,420.10, 198,715.20 and 73,298.20

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Solution

The fourth proportional to 132,420.10, 198,715.20 and 73,298.20 is: 109,994.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,420.10 : 198,715.20 = 73,298.20 : x
  2. Step 2: Convert to fraction form
    132,420.10/198,715.20 = 73,298.20/x
  3. Step 3: Cross multiply
    132,420.10x = 198,715.20 × 73,298.20
  4. Step 4: Simplify right side
    132,420.10x = 14,565,466,472.64
  5. Step 5: Solve for x
    x = 14,565,466,472.64/132,420.10
  6. Step 6: Final answer
    x = 109,994.38

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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.