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Finding the Fourth Proportional to 134,877.78, 186,129 and 74,448.36

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Solution

The fourth proportional to 134,877.78, 186,129 and 74,448.36 is: 102,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,877.78 : 186,129 = 74,448.36 : x
  2. Step 2: Convert to fraction form
    134,877.78/186,129 = 74,448.36/x
  3. Step 3: Cross multiply
    134,877.78x = 186,129 × 74,448.36
  4. Step 4: Simplify right side
    134,877.78x = 13,856,998,798.44
  5. Step 5: Solve for x
    x = 13,856,998,798.44/134,877.78
  6. Step 6: Final answer
    x = 102,737.45

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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.