Home / 137,664.03-189,979.28-77,239.04

Finding the Fourth Proportional to 137,664.03, 189,979.28 and 77,239.04

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Solution

The fourth proportional to 137,664.03, 189,979.28 and 77,239.04 is: 106,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,664.03 : 189,979.28 = 77,239.04 : x
  2. Step 2: Convert to fraction form
    137,664.03/189,979.28 = 77,239.04/x
  3. Step 3: Cross multiply
    137,664.03x = 189,979.28 × 77,239.04
  4. Step 4: Simplify right side
    137,664.03x = 14,673,816,820.90
  5. Step 5: Solve for x
    x = 14,673,816,820.90/137,664.03
  6. Step 6: Final answer
    x = 106,591.51

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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.