Home / 129,743.23-178,886.59-106,692.50

Finding the Fourth Proportional to 129,743.23, 178,886.59 and 106,692.50

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Solution

The fourth proportional to 129,743.23, 178,886.59 and 106,692.50 is: 147,104.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,743.23 : 178,886.59 = 106,692.50 : x
  2. Step 2: Convert to fraction form
    129,743.23/178,886.59 = 106,692.50/x
  3. Step 3: Cross multiply
    129,743.23x = 178,886.59 × 106,692.50
  4. Step 4: Simplify right side
    129,743.23x = 19,085,857,182.07
  5. Step 5: Solve for x
    x = 19,085,857,182.07/129,743.23
  6. Step 6: Final answer
    x = 147,104.84

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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.