Home / 135,972.78-203,987.97-42,485.58

Finding the Fourth Proportional to 135,972.78, 203,987.97 and 42,485.58

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Solution

The fourth proportional to 135,972.78, 203,987.97 and 42,485.58 is: 63,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,972.78 : 203,987.97 = 42,485.58 : x
  2. Step 2: Convert to fraction form
    135,972.78/203,987.97 = 42,485.58/x
  3. Step 3: Cross multiply
    135,972.78x = 203,987.97 × 42,485.58
  4. Step 4: Simplify right side
    135,972.78x = 8,666,547,218.47
  5. Step 5: Solve for x
    x = 8,666,547,218.47/135,972.78
  6. Step 6: Final answer
    x = 63,737.37

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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.