Home / 126,542.65-189,749.49-42,272.53

Finding the Fourth Proportional to 126,542.65, 189,749.49 and 42,272.53

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Solution

The fourth proportional to 126,542.65, 189,749.49 and 42,272.53 is: 63,387.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,542.65 : 189,749.49 = 42,272.53 : x
  2. Step 2: Convert to fraction form
    126,542.65/189,749.49 = 42,272.53/x
  3. Step 3: Cross multiply
    126,542.65x = 189,749.49 × 42,272.53
  4. Step 4: Simplify right side
    126,542.65x = 8,021,191,008.51
  5. Step 5: Solve for x
    x = 8,021,191,008.51/126,542.65
  6. Step 6: Final answer
    x = 63,387.25

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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.