Home / 151,203.30-208,647-87,545.40

Finding the Fourth Proportional to 151,203.30, 208,647 and 87,545.40

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Solution

The fourth proportional to 151,203.30, 208,647 and 87,545.40 is: 120,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,203.30 : 208,647 = 87,545.40 : x
  2. Step 2: Convert to fraction form
    151,203.30/208,647 = 87,545.40/x
  3. Step 3: Cross multiply
    151,203.30x = 208,647 × 87,545.40
  4. Step 4: Simplify right side
    151,203.30x = 18,266,085,073.80
  5. Step 5: Solve for x
    x = 18,266,085,073.80/151,203.30
  6. Step 6: Final answer
    x = 120,804.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.