Home / 134,939.04-186,229.12-78,347.04

Finding the Fourth Proportional to 134,939.04, 186,229.12 and 78,347.04

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Solution

The fourth proportional to 134,939.04, 186,229.12 and 78,347.04 is: 108,126.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,939.04 : 186,229.12 = 78,347.04 : x
  2. Step 2: Convert to fraction form
    134,939.04/186,229.12 = 78,347.04/x
  3. Step 3: Cross multiply
    134,939.04x = 186,229.12 × 78,347.04
  4. Step 4: Simplify right side
    134,939.04x = 14,590,500,313.80
  5. Step 5: Solve for x
    x = 14,590,500,313.80/134,939.04
  6. Step 6: Final answer
    x = 108,126.61

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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.