Home / 132,461.60-198,433.20-79,714.40

Finding the Fourth Proportional to 132,461.60, 198,433.20 and 79,714.40

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Solution

The fourth proportional to 132,461.60, 198,433.20 and 79,714.40 is: 119,415.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,461.60 : 198,433.20 = 79,714.40 : x
  2. Step 2: Convert to fraction form
    132,461.60/198,433.20 = 79,714.40/x
  3. Step 3: Cross multiply
    132,461.60x = 198,433.20 × 79,714.40
  4. Step 4: Simplify right side
    132,461.60x = 15,817,983,478.08
  5. Step 5: Solve for x
    x = 15,817,983,478.08/132,461.60
  6. Step 6: Final answer
    x = 119,415.62

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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.