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Finding the Fourth Proportional to 131,680.80, 197,348.40 and 52,730.40

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Solution

The fourth proportional to 131,680.80, 197,348.40 and 52,730.40 is: 79,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,680.80 : 197,348.40 = 52,730.40 : x
  2. Step 2: Convert to fraction form
    131,680.80/197,348.40 = 52,730.40/x
  3. Step 3: Cross multiply
    131,680.80x = 197,348.40 × 52,730.40
  4. Step 4: Simplify right side
    131,680.80x = 10,406,260,071.36
  5. Step 5: Solve for x
    x = 10,406,260,071.36/131,680.80
  6. Step 6: Final answer
    x = 79,026.40

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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.