Home / 145,149.16-200,305.69-81,487.08

Finding the Fourth Proportional to 145,149.16, 200,305.69 and 81,487.08

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Solution

The fourth proportional to 145,149.16, 200,305.69 and 81,487.08 is: 112,452.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,149.16 : 200,305.69 = 81,487.08 : x
  2. Step 2: Convert to fraction form
    145,149.16/200,305.69 = 81,487.08/x
  3. Step 3: Cross multiply
    145,149.16x = 200,305.69 × 81,487.08
  4. Step 4: Simplify right side
    145,149.16x = 16,322,325,785.49
  5. Step 5: Solve for x
    x = 16,322,325,785.49/145,149.16
  6. Step 6: Final answer
    x = 112,452.09

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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.