Home / 131,568.32-181,563.90-71,138.54

Finding the Fourth Proportional to 131,568.32, 181,563.90 and 71,138.54

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Solution

The fourth proportional to 131,568.32, 181,563.90 and 71,138.54 is: 98,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,568.32 : 181,563.90 = 71,138.54 : x
  2. Step 2: Convert to fraction form
    131,568.32/181,563.90 = 71,138.54/x
  3. Step 3: Cross multiply
    131,568.32x = 181,563.90 × 71,138.54
  4. Step 4: Simplify right side
    131,568.32x = 12,916,190,762.71
  5. Step 5: Solve for x
    x = 12,916,190,762.71/131,568.32
  6. Step 6: Final answer
    x = 98,170.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.