Home / 121,075.56-181,614.42-42,189.66

Finding the Fourth Proportional to 121,075.56, 181,614.42 and 42,189.66

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Solution

The fourth proportional to 121,075.56, 181,614.42 and 42,189.66 is: 63,284.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,075.56 : 181,614.42 = 42,189.66 : x
  2. Step 2: Convert to fraction form
    121,075.56/181,614.42 = 42,189.66/x
  3. Step 3: Cross multiply
    121,075.56x = 181,614.42 × 42,189.66
  4. Step 4: Simplify right side
    121,075.56x = 7,662,250,630.90
  5. Step 5: Solve for x
    x = 7,662,250,630.90/121,075.56
  6. Step 6: Final answer
    x = 63,284.87

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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.