Home / 145,081.82-200,232.46-81,423.12

Finding the Fourth Proportional to 145,081.82, 200,232.46 and 81,423.12

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Solution

The fourth proportional to 145,081.82, 200,232.46 and 81,423.12 is: 112,374.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,081.82 : 200,232.46 = 81,423.12 : x
  2. Step 2: Convert to fraction form
    145,081.82/200,232.46 = 81,423.12/x
  3. Step 3: Cross multiply
    145,081.82x = 200,232.46 × 81,423.12
  4. Step 4: Simplify right side
    145,081.82x = 16,303,551,618.48
  5. Step 5: Solve for x
    x = 16,303,551,618.48/145,081.82
  6. Step 6: Final answer
    x = 112,374.88

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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.