Home / 121,365.72-181,808.28-57,236.04

Finding the Fourth Proportional to 121,365.72, 181,808.28 and 57,236.04

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Solution

The fourth proportional to 121,365.72, 181,808.28 and 57,236.04 is: 85,740.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,365.72 : 181,808.28 = 57,236.04 : x
  2. Step 2: Convert to fraction form
    121,365.72/181,808.28 = 57,236.04/x
  3. Step 3: Cross multiply
    121,365.72x = 181,808.28 × 57,236.04
  4. Step 4: Simplify right side
    121,365.72x = 10,405,985,986.41
  5. Step 5: Solve for x
    x = 10,405,985,986.41/121,365.72
  6. Step 6: Final answer
    x = 85,740.73

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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.