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Finding the Fourth Proportional to 131,147.40, 197,109.90 and 114,040.20

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Solution

The fourth proportional to 131,147.40, 197,109.90 and 114,040.20 is: 171,398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,147.40 : 197,109.90 = 114,040.20 : x
  2. Step 2: Convert to fraction form
    131,147.40/197,109.90 = 114,040.20/x
  3. Step 3: Cross multiply
    131,147.40x = 197,109.90 × 114,040.20
  4. Step 4: Simplify right side
    131,147.40x = 22,478,452,417.98
  5. Step 5: Solve for x
    x = 22,478,452,417.98/131,147.40
  6. Step 6: Final answer
    x = 171,398.38

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1.5x scale

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.