Home / 112,505.45-155,183.94-72,155.30

Finding the Fourth Proportional to 112,505.45, 155,183.94 and 72,155.30

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Solution

The fourth proportional to 112,505.45, 155,183.94 and 72,155.30 is: 99,527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,505.45 : 155,183.94 = 72,155.30 : x
  2. Step 2: Convert to fraction form
    112,505.45/155,183.94 = 72,155.30/x
  3. Step 3: Cross multiply
    112,505.45x = 155,183.94 × 72,155.30
  4. Step 4: Simplify right side
    112,505.45x = 11,197,342,969.96
  5. Step 5: Solve for x
    x = 11,197,342,969.96/112,505.45
  6. Step 6: Final answer
    x = 99,527.12

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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.