Home / 131,407.90-197,143.17-42,661.60

Finding the Fourth Proportional to 131,407.90, 197,143.17 and 42,661.60

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Solution

The fourth proportional to 131,407.90, 197,143.17 and 42,661.60 is: 64,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,407.90 : 197,143.17 = 42,661.60 : x
  2. Step 2: Convert to fraction form
    131,407.90/197,143.17 = 42,661.60/x
  3. Step 3: Cross multiply
    131,407.90x = 197,143.17 × 42,661.60
  4. Step 4: Simplify right side
    131,407.90x = 8,410,443,061.27
  5. Step 5: Solve for x
    x = 8,410,443,061.27/131,407.90
  6. Step 6: Final answer
    x = 64,002.57

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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.