Home / 150,795.36-208,072.65-87,139.08

Finding the Fourth Proportional to 150,795.36, 208,072.65 and 87,139.08

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Solution

The fourth proportional to 150,795.36, 208,072.65 and 87,139.08 is: 120,237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,795.36 : 208,072.65 = 87,139.08 : x
  2. Step 2: Convert to fraction form
    150,795.36/208,072.65 = 87,139.08/x
  3. Step 3: Cross multiply
    150,795.36x = 208,072.65 × 87,139.08
  4. Step 4: Simplify right side
    150,795.36x = 18,131,259,294.16
  5. Step 5: Solve for x
    x = 18,131,259,294.16/150,795.36
  6. Step 6: Final answer
    x = 120,237.51

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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.