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Finding the Fourth Proportional to 98,179.90, 135,488.91 and 55,739.14

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Solution

The fourth proportional to 98,179.90, 135,488.91 and 55,739.14 is: 76,920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,179.90 : 135,488.91 = 55,739.14 : x
  2. Step 2: Convert to fraction form
    98,179.90/135,488.91 = 55,739.14/x
  3. Step 3: Cross multiply
    98,179.90x = 135,488.91 × 55,739.14
  4. Step 4: Simplify right side
    98,179.90x = 7,552,035,322.94
  5. Step 5: Solve for x
    x = 7,552,035,322.94/98,179.90
  6. Step 6: Final answer
    x = 76,920.38

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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.