Home / 145,008.28-200,120.62-81,350.20

Finding the Fourth Proportional to 145,008.28, 200,120.62 and 81,350.20

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Solution

The fourth proportional to 145,008.28, 200,120.62 and 81,350.20 is: 112,268.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,008.28 : 200,120.62 = 81,350.20 : x
  2. Step 2: Convert to fraction form
    145,008.28/200,120.62 = 81,350.20/x
  3. Step 3: Cross multiply
    145,008.28x = 200,120.62 × 81,350.20
  4. Step 4: Simplify right side
    145,008.28x = 16,279,852,461.12
  5. Step 5: Solve for x
    x = 16,279,852,461.12/145,008.28
  6. Step 6: Final answer
    x = 112,268.43

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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.