Home / 121,158.81-181,725.26-42,274.53

Finding the Fourth Proportional to 121,158.81, 181,725.26 and 42,274.53

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Solution

The fourth proportional to 121,158.81, 181,725.26 and 42,274.53 is: 63,407.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,158.81 : 181,725.26 = 42,274.53 : x
  2. Step 2: Convert to fraction form
    121,158.81/181,725.26 = 42,274.53/x
  3. Step 3: Cross multiply
    121,158.81x = 181,725.26 × 42,274.53
  4. Step 4: Simplify right side
    121,158.81x = 7,682,349,744.26
  5. Step 5: Solve for x
    x = 7,682,349,744.26/121,158.81
  6. Step 6: Final answer
    x = 63,407.27

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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.