Home / 272,603.07-408,969.27-85,614.57

Finding the Fourth Proportional to 272,603.07, 408,969.27 and 85,614.57

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Solution

The fourth proportional to 272,603.07, 408,969.27 and 85,614.57 is: 128,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,603.07 : 408,969.27 = 85,614.57 : x
  2. Step 2: Convert to fraction form
    272,603.07/408,969.27 = 85,614.57/x
  3. Step 3: Cross multiply
    272,603.07x = 408,969.27 × 85,614.57
  4. Step 4: Simplify right side
    272,603.07x = 35,013,728,194.26
  5. Step 5: Solve for x
    x = 35,013,728,194.26/272,603.07
  6. Step 6: Final answer
    x = 128,442.16

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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.