Home / 134,835.72-186,072.03-74,406.90

Finding the Fourth Proportional to 134,835.72, 186,072.03 and 74,406.90

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Solution

The fourth proportional to 134,835.72, 186,072.03 and 74,406.90 is: 102,680.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,835.72 : 186,072.03 = 74,406.90 : x
  2. Step 2: Convert to fraction form
    134,835.72/186,072.03 = 74,406.90/x
  3. Step 3: Cross multiply
    134,835.72x = 186,072.03 × 74,406.90
  4. Step 4: Simplify right side
    134,835.72x = 13,845,042,929.01
  5. Step 5: Solve for x
    x = 13,845,042,929.01/134,835.72
  6. Step 6: Final answer
    x = 102,680.82

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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.