Home / 126,636.48-189,860.34-42,346.80

Finding the Fourth Proportional to 126,636.48, 189,860.34 and 42,346.80

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Solution

The fourth proportional to 126,636.48, 189,860.34 and 42,346.80 is: 63,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,636.48 : 189,860.34 = 42,346.80 : x
  2. Step 2: Convert to fraction form
    126,636.48/189,860.34 = 42,346.80/x
  3. Step 3: Cross multiply
    126,636.48x = 189,860.34 × 42,346.80
  4. Step 4: Simplify right side
    126,636.48x = 8,039,977,845.91
  5. Step 5: Solve for x
    x = 8,039,977,845.91/126,636.48
  6. Step 6: Final answer
    x = 63,488.64

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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.