Home / 146,031.30-217,990.62-128,316.60

Finding the Fourth Proportional to 146,031.30, 217,990.62 and 128,316.60

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Solution

The fourth proportional to 146,031.30, 217,990.62 and 128,316.60 is: 191,546.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,031.30 : 217,990.62 = 128,316.60 : x
  2. Step 2: Convert to fraction form
    146,031.30/217,990.62 = 128,316.60/x
  3. Step 3: Cross multiply
    146,031.30x = 217,990.62 × 128,316.60
  4. Step 4: Simplify right side
    146,031.30x = 27,971,815,190.29
  5. Step 5: Solve for x
    x = 27,971,815,190.29/146,031.30
  6. Step 6: Final answer
    x = 191,546.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.