Home / 122,903.62-169,629.42-71,913.40

Finding the Fourth Proportional to 122,903.62, 169,629.42 and 71,913.40

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Solution

The fourth proportional to 122,903.62, 169,629.42 and 71,913.40 is: 99,253.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,903.62 : 169,629.42 = 71,913.40 : x
  2. Step 2: Convert to fraction form
    122,903.62/169,629.42 = 71,913.40/x
  3. Step 3: Cross multiply
    122,903.62x = 169,629.42 × 71,913.40
  4. Step 4: Simplify right side
    122,903.62x = 12,198,628,332.23
  5. Step 5: Solve for x
    x = 12,198,628,332.23/122,903.62
  6. Step 6: Final answer
    x = 99,253.61

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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.