Home / 101,040.34-139,432.45-55,720.23

Finding the Fourth Proportional to 101,040.34, 139,432.45 and 55,720.23

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Solution

The fourth proportional to 101,040.34, 139,432.45 and 55,720.23 is: 76,892.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,040.34 : 139,432.45 = 55,720.23 : x
  2. Step 2: Convert to fraction form
    101,040.34/139,432.45 = 55,720.23/x
  3. Step 3: Cross multiply
    101,040.34x = 139,432.45 × 55,720.23
  4. Step 4: Simplify right side
    101,040.34x = 7,769,207,486.30
  5. Step 5: Solve for x
    x = 7,769,207,486.30/101,040.34
  6. Step 6: Final answer
    x = 76,892.14

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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.