Home / 136,320.15-188,120.03-78,967.29

Finding the Fourth Proportional to 136,320.15, 188,120.03 and 78,967.29

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Solution

The fourth proportional to 136,320.15, 188,120.03 and 78,967.29 is: 108,973.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,320.15 : 188,120.03 = 78,967.29 : x
  2. Step 2: Convert to fraction form
    136,320.15/188,120.03 = 78,967.29/x
  3. Step 3: Cross multiply
    136,320.15x = 188,120.03 × 78,967.29
  4. Step 4: Simplify right side
    136,320.15x = 14,855,328,568.98
  5. Step 5: Solve for x
    x = 14,855,328,568.98/136,320.15
  6. Step 6: Final answer
    x = 108,973.83

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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.