Home / 101,040.46-139,432.62-55,720.35

Finding the Fourth Proportional to 101,040.46, 139,432.62 and 55,720.35

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Solution

The fourth proportional to 101,040.46, 139,432.62 and 55,720.35 is: 76,892.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,040.46 : 139,432.62 = 55,720.35 : x
  2. Step 2: Convert to fraction form
    101,040.46/139,432.62 = 55,720.35/x
  3. Step 3: Cross multiply
    101,040.46x = 139,432.62 × 55,720.35
  4. Step 4: Simplify right side
    101,040.46x = 7,769,234,596.77
  5. Step 5: Solve for x
    x = 7,769,234,596.77/101,040.46
  6. Step 6: Final answer
    x = 76,892.31

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1.5x scale

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.