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Finding the Fourth Proportional to 131,411.10, 197,116.65 and 101,919.90

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Solution

The fourth proportional to 131,411.10, 197,116.65 and 101,919.90 is: 152,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,411.10 : 197,116.65 = 101,919.90 : x
  2. Step 2: Convert to fraction form
    131,411.10/197,116.65 = 101,919.90/x
  3. Step 3: Cross multiply
    131,411.10x = 197,116.65 × 101,919.90
  4. Step 4: Simplify right side
    131,411.10x = 20,090,109,256.34
  5. Step 5: Solve for x
    x = 20,090,109,256.34/131,411.10
  6. Step 6: Final answer
    x = 152,879.85

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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.