Home / 121,030.68-181,488.42-42,135.24

Finding the Fourth Proportional to 121,030.68, 181,488.42 and 42,135.24

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Solution

The fourth proportional to 121,030.68, 181,488.42 and 42,135.24 is: 63,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,030.68 : 181,488.42 = 42,135.24 : x
  2. Step 2: Convert to fraction form
    121,030.68/181,488.42 = 42,135.24/x
  3. Step 3: Cross multiply
    121,030.68x = 181,488.42 × 42,135.24
  4. Step 4: Simplify right side
    121,030.68x = 7,647,058,133.92
  5. Step 5: Solve for x
    x = 7,647,058,133.92/121,030.68
  6. Step 6: Final answer
    x = 63,182.81

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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.