Home / 134,943.52-186,207.92-78,343.84

Finding the Fourth Proportional to 134,943.52, 186,207.92 and 78,343.84

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Solution

The fourth proportional to 134,943.52, 186,207.92 and 78,343.84 is: 108,106.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,943.52 : 186,207.92 = 78,343.84 : x
  2. Step 2: Convert to fraction form
    134,943.52/186,207.92 = 78,343.84/x
  3. Step 3: Cross multiply
    134,943.52x = 186,207.92 × 78,343.84
  4. Step 4: Simplify right side
    134,943.52x = 14,588,243,491.21
  5. Step 5: Solve for x
    x = 14,588,243,491.21/134,943.52
  6. Step 6: Final answer
    x = 108,106.29

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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.