Home / 136,158.10-187,886.97-78,801.59

Finding the Fourth Proportional to 136,158.10, 187,886.97 and 78,801.59

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Solution

The fourth proportional to 136,158.10, 187,886.97 and 78,801.59 is: 108,739.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,158.10 : 187,886.97 = 78,801.59 : x
  2. Step 2: Convert to fraction form
    136,158.10/187,886.97 = 78,801.59/x
  3. Step 3: Cross multiply
    136,158.10x = 187,886.97 × 78,801.59
  4. Step 4: Simplify right side
    136,158.10x = 14,805,792,446.00
  5. Step 5: Solve for x
    x = 14,805,792,446.00/136,158.10
  6. Step 6: Final answer
    x = 108,739.71

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1.5x scale

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.