Home / 111,408.34-153,739.22-60,420.13

Finding the Fourth Proportional to 111,408.34, 153,739.22 and 60,420.13

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Solution

The fourth proportional to 111,408.34, 153,739.22 and 60,420.13 is: 83,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,408.34 : 153,739.22 = 60,420.13 : x
  2. Step 2: Convert to fraction form
    111,408.34/153,739.22 = 60,420.13/x
  3. Step 3: Cross multiply
    111,408.34x = 153,739.22 × 60,420.13
  4. Step 4: Simplify right side
    111,408.34x = 9,288,942,972.05
  5. Step 5: Solve for x
    x = 9,288,942,972.05/111,408.34
  6. Step 6: Final answer
    x = 83,377.45

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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.