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Finding the Fourth Proportional to 145,854.62, 201,279.38 and 78,786.62

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Solution

The fourth proportional to 145,854.62, 201,279.38 and 78,786.62 is: 108,725.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,854.62 : 201,279.38 = 78,786.62 : x
  2. Step 2: Convert to fraction form
    145,854.62/201,279.38 = 78,786.62/x
  3. Step 3: Cross multiply
    145,854.62x = 201,279.38 × 78,786.62
  4. Step 4: Simplify right side
    145,854.62x = 15,858,121,631.96
  5. Step 5: Solve for x
    x = 15,858,121,631.96/145,854.62
  6. Step 6: Final answer
    x = 108,725.54

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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.