Home / 83,435.08-125,153.04-21,105.64

Finding the Fourth Proportional to 83,435.08, 125,153.04 and 21,105.64

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Solution

The fourth proportional to 83,435.08, 125,153.04 and 21,105.64 is: 31,658.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,435.08 : 125,153.04 = 21,105.64 : x
  2. Step 2: Convert to fraction form
    83,435.08/125,153.04 = 21,105.64/x
  3. Step 3: Cross multiply
    83,435.08x = 125,153.04 × 21,105.64
  4. Step 4: Simplify right side
    83,435.08x = 2,641,435,007.15
  5. Step 5: Solve for x
    x = 2,641,435,007.15/83,435.08
  6. Step 6: Final answer
    x = 31,658.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.