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Finding the Fourth Proportional to 131,437.70, 197,156.55 and 61,324.10

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Solution

The fourth proportional to 131,437.70, 197,156.55 and 61,324.10 is: 91,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,437.70 : 197,156.55 = 61,324.10 : x
  2. Step 2: Convert to fraction form
    131,437.70/197,156.55 = 61,324.10/x
  3. Step 3: Cross multiply
    131,437.70x = 197,156.55 × 61,324.10
  4. Step 4: Simplify right side
    131,437.70x = 12,090,447,987.86
  5. Step 5: Solve for x
    x = 12,090,447,987.86/131,437.70
  6. Step 6: Final answer
    x = 91,986.15

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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.