Home / 145,253.76-200,455.06-80,725.72

Finding the Fourth Proportional to 145,253.76, 200,455.06 and 80,725.72

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Solution

The fourth proportional to 145,253.76, 200,455.06 and 80,725.72 is: 111,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,253.76 : 200,455.06 = 80,725.72 : x
  2. Step 2: Convert to fraction form
    145,253.76/200,455.06 = 80,725.72/x
  3. Step 3: Cross multiply
    145,253.76x = 200,455.06 × 80,725.72
  4. Step 4: Simplify right side
    145,253.76x = 16,181,879,046.14
  5. Step 5: Solve for x
    x = 16,181,879,046.14/145,253.76
  6. Step 6: Final answer
    x = 111,404.20

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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.