Home / 146,121.39-219,005.64-71,129.16

Finding the Fourth Proportional to 146,121.39, 219,005.64 and 71,129.16

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Solution

The fourth proportional to 146,121.39, 219,005.64 and 71,129.16 is: 106,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,121.39 : 219,005.64 = 71,129.16 : x
  2. Step 2: Convert to fraction form
    146,121.39/219,005.64 = 71,129.16/x
  3. Step 3: Cross multiply
    146,121.39x = 219,005.64 × 71,129.16
  4. Step 4: Simplify right side
    146,121.39x = 15,577,687,208.46
  5. Step 5: Solve for x
    x = 15,577,687,208.46/146,121.39
  6. Step 6: Final answer
    x = 106,607.85

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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.