Home / 131,640.80-197,491.92-38,148.32

Finding the Fourth Proportional to 131,640.80, 197,491.92 and 38,148.32

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Solution

The fourth proportional to 131,640.80, 197,491.92 and 38,148.32 is: 57,231.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,640.80 : 197,491.92 = 38,148.32 : x
  2. Step 2: Convert to fraction form
    131,640.80/197,491.92 = 38,148.32/x
  3. Step 3: Cross multiply
    131,640.80x = 197,491.92 × 38,148.32
  4. Step 4: Simplify right side
    131,640.80x = 7,533,984,961.57
  5. Step 5: Solve for x
    x = 7,533,984,961.57/131,640.80
  6. Step 6: Final answer
    x = 57,231.38

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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.