Home / 145,010.28-200,123.38-81,352.20

Finding the Fourth Proportional to 145,010.28, 200,123.38 and 81,352.20

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Solution

The fourth proportional to 145,010.28, 200,123.38 and 81,352.20 is: 112,271.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,010.28 : 200,123.38 = 81,352.20 : x
  2. Step 2: Convert to fraction form
    145,010.28/200,123.38 = 81,352.20/x
  3. Step 3: Cross multiply
    145,010.28x = 200,123.38 × 81,352.20
  4. Step 4: Simplify right side
    145,010.28x = 16,280,477,234.44
  5. Step 5: Solve for x
    x = 16,280,477,234.44/145,010.28
  6. Step 6: Final answer
    x = 112,271.19

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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.