Home / 145,115.64-200,257.92-81,451.80

Finding the Fourth Proportional to 145,115.64, 200,257.92 and 81,451.80

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Solution

The fourth proportional to 145,115.64, 200,257.92 and 81,451.80 is: 112,402.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,115.64 : 200,257.92 = 81,451.80 : x
  2. Step 2: Convert to fraction form
    145,115.64/200,257.92 = 81,451.80/x
  3. Step 3: Cross multiply
    145,115.64x = 200,257.92 × 81,451.80
  4. Step 4: Simplify right side
    145,115.64x = 16,311,368,048.26
  5. Step 5: Solve for x
    x = 16,311,368,048.26/145,115.64
  6. Step 6: Final answer
    x = 112,402.55

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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.