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Finding the Fourth Proportional to 136,710.65, 188,662.35 and 79,363.25

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Solution

The fourth proportional to 136,710.65, 188,662.35 and 79,363.25 is: 109,522.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,710.65 : 188,662.35 = 79,363.25 : x
  2. Step 2: Convert to fraction form
    136,710.65/188,662.35 = 79,363.25/x
  3. Step 3: Cross multiply
    136,710.65x = 188,662.35 × 79,363.25
  4. Step 4: Simplify right side
    136,710.65x = 14,972,856,851.82
  5. Step 5: Solve for x
    x = 14,972,856,851.82/136,710.65
  6. Step 6: Final answer
    x = 109,522.25

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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.