Home / 145,012.92-200,118.12-81,350.64

Finding the Fourth Proportional to 145,012.92, 200,118.12 and 81,350.64

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Solution

The fourth proportional to 145,012.92, 200,118.12 and 81,350.64 is: 112,264.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,012.92 : 200,118.12 = 81,350.64 : x
  2. Step 2: Convert to fraction form
    145,012.92/200,118.12 = 81,350.64/x
  3. Step 3: Cross multiply
    145,012.92x = 200,118.12 × 81,350.64
  4. Step 4: Simplify right side
    145,012.92x = 16,279,737,137.60
  5. Step 5: Solve for x
    x = 16,279,737,137.60/145,012.92
  6. Step 6: Final answer
    x = 112,264.05

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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.