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Finding the Fourth Proportional to 131,574.55, 197,363.67 and 42,828.52

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Solution

The fourth proportional to 131,574.55, 197,363.67 and 42,828.52 is: 64,243.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,574.55 : 197,363.67 = 42,828.52 : x
  2. Step 2: Convert to fraction form
    131,574.55/197,363.67 = 42,828.52/x
  3. Step 3: Cross multiply
    131,574.55x = 197,363.67 × 42,828.52
  4. Step 4: Simplify right side
    131,574.55x = 8,452,793,887.87
  5. Step 5: Solve for x
    x = 8,452,793,887.87/131,574.55
  6. Step 6: Final answer
    x = 64,243.38

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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.