Home / 121,247.42-181,871.48-42,361.65

Finding the Fourth Proportional to 121,247.42, 181,871.48 and 42,361.65

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Solution

The fourth proportional to 121,247.42, 181,871.48 and 42,361.65 is: 63,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,247.42 : 181,871.48 = 42,361.65 : x
  2. Step 2: Convert to fraction form
    121,247.42/181,871.48 = 42,361.65/x
  3. Step 3: Cross multiply
    121,247.42x = 181,871.48 × 42,361.65
  4. Step 4: Simplify right side
    121,247.42x = 7,704,376,086.65
  5. Step 5: Solve for x
    x = 7,704,376,086.65/121,247.42
  6. Step 6: Final answer
    x = 63,542.60

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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.