Home / 145,077.05-200,215.21-81,414.85

Finding the Fourth Proportional to 145,077.05, 200,215.21 and 81,414.85

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Solution

The fourth proportional to 145,077.05, 200,215.21 and 81,414.85 is: 112,357.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,077.05 : 200,215.21 = 81,414.85 : x
  2. Step 2: Convert to fraction form
    145,077.05/200,215.21 = 81,414.85/x
  3. Step 3: Cross multiply
    145,077.05x = 200,215.21 × 81,414.85
  4. Step 4: Simplify right side
    145,077.05x = 16,300,490,585.79
  5. Step 5: Solve for x
    x = 16,300,490,585.79/145,077.05
  6. Step 6: Final answer
    x = 112,357.48

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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.