Home / 145,042.66-200,155.70-80,508.11

Finding the Fourth Proportional to 145,042.66, 200,155.70 and 80,508.11

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Solution

The fourth proportional to 145,042.66, 200,155.70 and 80,508.11 is: 111,099.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,042.66 : 200,155.70 = 80,508.11 : x
  2. Step 2: Convert to fraction form
    145,042.66/200,155.70 = 80,508.11/x
  3. Step 3: Cross multiply
    145,042.66x = 200,155.70 × 80,508.11
  4. Step 4: Simplify right side
    145,042.66x = 16,114,156,313.22
  5. Step 5: Solve for x
    x = 16,114,156,313.22/145,042.66
  6. Step 6: Final answer
    x = 111,099.43

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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.