Home / 145,099.43-200,235.53-81,435.86

Finding the Fourth Proportional to 145,099.43, 200,235.53 and 81,435.86

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Solution

The fourth proportional to 145,099.43, 200,235.53 and 81,435.86 is: 112,380.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,099.43 : 200,235.53 = 81,435.86 : x
  2. Step 2: Convert to fraction form
    145,099.43/200,235.53 = 81,435.86/x
  3. Step 3: Cross multiply
    145,099.43x = 200,235.53 × 81,435.86
  4. Step 4: Simplify right side
    145,099.43x = 16,306,351,790.52
  5. Step 5: Solve for x
    x = 16,306,351,790.52/145,099.43
  6. Step 6: Final answer
    x = 112,380.54

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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.