Home / 126,890.16-190,357.20-42,658.56

Finding the Fourth Proportional to 126,890.16, 190,357.20 and 42,658.56

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Solution

The fourth proportional to 126,890.16, 190,357.20 and 42,658.56 is: 63,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,890.16 : 190,357.20 = 42,658.56 : x
  2. Step 2: Convert to fraction form
    126,890.16/190,357.20 = 42,658.56/x
  3. Step 3: Cross multiply
    126,890.16x = 190,357.20 × 42,658.56
  4. Step 4: Simplify right side
    126,890.16x = 8,120,364,037.63
  5. Step 5: Solve for x
    x = 8,120,364,037.63/126,890.16
  6. Step 6: Final answer
    x = 63,995.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.