Home / 136,155.84-187,883.87-78,799.35

Finding the Fourth Proportional to 136,155.84, 187,883.87 and 78,799.35

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Solution

The fourth proportional to 136,155.84, 187,883.87 and 78,799.35 is: 108,736.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,155.84 : 187,883.87 = 78,799.35 : x
  2. Step 2: Convert to fraction form
    136,155.84/187,883.87 = 78,799.35/x
  3. Step 3: Cross multiply
    136,155.84x = 187,883.87 × 78,799.35
  4. Step 4: Simplify right side
    136,155.84x = 14,805,126,528.45
  5. Step 5: Solve for x
    x = 14,805,126,528.45/136,155.84
  6. Step 6: Final answer
    x = 108,736.63

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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.