Home / 145,814.78-201,226.44-81,282.18

Finding the Fourth Proportional to 145,814.78, 201,226.44 and 81,282.18

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Solution

The fourth proportional to 145,814.78, 201,226.44 and 81,282.18 is: 112,170.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,814.78 : 201,226.44 = 81,282.18 : x
  2. Step 2: Convert to fraction form
    145,814.78/201,226.44 = 81,282.18/x
  3. Step 3: Cross multiply
    145,814.78x = 201,226.44 × 81,282.18
  4. Step 4: Simplify right side
    145,814.78x = 16,356,123,716.84
  5. Step 5: Solve for x
    x = 16,356,123,716.84/145,814.78
  6. Step 6: Final answer
    x = 112,170.55

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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.