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Finding the Fourth Proportional to 131,363.80, 197,094.30 and 42,620.20

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Solution

The fourth proportional to 131,363.80, 197,094.30 and 42,620.20 is: 63,946.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,363.80 : 197,094.30 = 42,620.20 : x
  2. Step 2: Convert to fraction form
    131,363.80/197,094.30 = 42,620.20/x
  3. Step 3: Cross multiply
    131,363.80x = 197,094.30 × 42,620.20
  4. Step 4: Simplify right side
    131,363.80x = 8,400,198,484.86
  5. Step 5: Solve for x
    x = 8,400,198,484.86/131,363.80
  6. Step 6: Final answer
    x = 63,946.07

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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.