Home / 121,368.72-181,812.78-57,239.04

Finding the Fourth Proportional to 121,368.72, 181,812.78 and 57,239.04

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Solution

The fourth proportional to 121,368.72, 181,812.78 and 57,239.04 is: 85,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,368.72 : 181,812.78 = 57,239.04 : x
  2. Step 2: Convert to fraction form
    121,368.72/181,812.78 = 57,239.04/x
  3. Step 3: Cross multiply
    121,368.72x = 181,812.78 × 57,239.04
  4. Step 4: Simplify right side
    121,368.72x = 10,406,788,986.93
  5. Step 5: Solve for x
    x = 10,406,788,986.93/121,368.72
  6. Step 6: Final answer
    x = 85,745.23

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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.