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Finding the Fourth Proportional to 98,341, 135,722.19 and 55,905.88

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Solution

The fourth proportional to 98,341, 135,722.19 and 55,905.88 is: 77,156.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,341 : 135,722.19 = 55,905.88 : x
  2. Step 2: Convert to fraction form
    98,341/135,722.19 = 55,905.88/x
  3. Step 3: Cross multiply
    98,341x = 135,722.19 × 55,905.88
  4. Step 4: Simplify right side
    98,341x = 7,587,668,467.48
  5. Step 5: Solve for x
    x = 7,587,668,467.48/98,341
  6. Step 6: Final answer
    x = 77,156.71

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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.