Home / 105,249.20-145,239.36-57,500.24

Finding the Fourth Proportional to 105,249.20, 145,239.36 and 57,500.24

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Solution

The fourth proportional to 105,249.20, 145,239.36 and 57,500.24 is: 79,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,249.20 : 145,239.36 = 57,500.24 : x
  2. Step 2: Convert to fraction form
    105,249.20/145,239.36 = 57,500.24/x
  3. Step 3: Cross multiply
    105,249.20x = 145,239.36 × 57,500.24
  4. Step 4: Simplify right side
    105,249.20x = 8,351,298,057.45
  5. Step 5: Solve for x
    x = 8,351,298,057.45/105,249.20
  6. Step 6: Final answer
    x = 79,347.85

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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.