Home / 145,167.30-200,325.69-81,507.78

Finding the Fourth Proportional to 145,167.30, 200,325.69 and 81,507.78

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Solution

The fourth proportional to 145,167.30, 200,325.69 and 81,507.78 is: 112,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,167.30 : 200,325.69 = 81,507.78 : x
  2. Step 2: Convert to fraction form
    145,167.30/200,325.69 = 81,507.78/x
  3. Step 3: Cross multiply
    145,167.30x = 200,325.69 × 81,507.78
  4. Step 4: Simplify right side
    145,167.30x = 16,328,102,268.87
  5. Step 5: Solve for x
    x = 16,328,102,268.87/145,167.30
  6. Step 6: Final answer
    x = 112,477.83

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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.