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Finding the Fourth Proportional to 135,775.71, 203,603.42 and 72,580.52

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Solution

The fourth proportional to 135,775.71, 203,603.42 and 72,580.52 is: 108,838.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,775.71 : 203,603.42 = 72,580.52 : x
  2. Step 2: Convert to fraction form
    135,775.71/203,603.42 = 72,580.52/x
  3. Step 3: Cross multiply
    135,775.71x = 203,603.42 × 72,580.52
  4. Step 4: Simplify right side
    135,775.71x = 14,777,642,787.84
  5. Step 5: Solve for x
    x = 14,777,642,787.84/135,775.71
  6. Step 6: Final answer
    x = 108,838.63

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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.