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Finding the Fourth Proportional to 135,348.33, 186,800.72 and 77,976.74

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Solution

The fourth proportional to 135,348.33, 186,800.72 and 77,976.74 is: 107,619.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,348.33 : 186,800.72 = 77,976.74 : x
  2. Step 2: Convert to fraction form
    135,348.33/186,800.72 = 77,976.74/x
  3. Step 3: Cross multiply
    135,348.33x = 186,800.72 × 77,976.74
  4. Step 4: Simplify right side
    135,348.33x = 14,566,111,175.25
  5. Step 5: Solve for x
    x = 14,566,111,175.25/135,348.33
  6. Step 6: Final answer
    x = 107,619.44

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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.