Home / 145,007.28-200,119.24-81,349.20

Finding the Fourth Proportional to 145,007.28, 200,119.24 and 81,349.20

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Solution

The fourth proportional to 145,007.28, 200,119.24 and 81,349.20 is: 112,267.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,007.28 : 200,119.24 = 81,349.20 : x
  2. Step 2: Convert to fraction form
    145,007.28/200,119.24 = 81,349.20/x
  3. Step 3: Cross multiply
    145,007.28x = 200,119.24 × 81,349.20
  4. Step 4: Simplify right side
    145,007.28x = 16,279,540,078.61
  5. Step 5: Solve for x
    x = 16,279,540,078.61/145,007.28
  6. Step 6: Final answer
    x = 112,267.05

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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.