Home / 145,149.66-200,306.39-81,487.58

Finding the Fourth Proportional to 145,149.66, 200,306.39 and 81,487.58

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Solution

The fourth proportional to 145,149.66, 200,306.39 and 81,487.58 is: 112,452.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,149.66 : 200,306.39 = 81,487.58 : x
  2. Step 2: Convert to fraction form
    145,149.66/200,306.39 = 81,487.58/x
  3. Step 3: Cross multiply
    145,149.66x = 200,306.39 × 81,487.58
  4. Step 4: Simplify right side
    145,149.66x = 16,322,481,570.67
  5. Step 5: Solve for x
    x = 16,322,481,570.67/145,149.66
  6. Step 6: Final answer
    x = 112,452.77

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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.