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Finding the Fourth Proportional to 131,148.40, 197,111.40 and 114,041.20

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Solution

The fourth proportional to 131,148.40, 197,111.40 and 114,041.20 is: 171,399.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,148.40 : 197,111.40 = 114,041.20 : x
  2. Step 2: Convert to fraction form
    131,148.40/197,111.40 = 114,041.20/x
  3. Step 3: Cross multiply
    131,148.40x = 197,111.40 × 114,041.20
  4. Step 4: Simplify right side
    131,148.40x = 22,478,820,589.68
  5. Step 5: Solve for x
    x = 22,478,820,589.68/131,148.40
  6. Step 6: Final answer
    x = 171,399.88

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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.