Home / 121,272.48-181,961.64-42,443.28

Finding the Fourth Proportional to 121,272.48, 181,961.64 and 42,443.28

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Solution

The fourth proportional to 121,272.48, 181,961.64 and 42,443.28 is: 63,683.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,272.48 : 181,961.64 = 42,443.28 : x
  2. Step 2: Convert to fraction form
    121,272.48/181,961.64 = 42,443.28/x
  3. Step 3: Cross multiply
    121,272.48x = 181,961.64 × 42,443.28
  4. Step 4: Simplify right side
    121,272.48x = 7,723,048,835.78
  5. Step 5: Solve for x
    x = 7,723,048,835.78/121,272.48
  6. Step 6: Final answer
    x = 63,683.44

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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.