Home / 153,867.75-212,344.83-86,799.75

Finding the Fourth Proportional to 153,867.75, 212,344.83 and 86,799.75

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Solution

The fourth proportional to 153,867.75, 212,344.83 and 86,799.75 is: 119,787.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,867.75 : 212,344.83 = 86,799.75 : x
  2. Step 2: Convert to fraction form
    153,867.75/212,344.83 = 86,799.75/x
  3. Step 3: Cross multiply
    153,867.75x = 212,344.83 × 86,799.75
  4. Step 4: Simplify right side
    153,867.75x = 18,431,478,157.79
  5. Step 5: Solve for x
    x = 18,431,478,157.79/153,867.75
  6. Step 6: Final answer
    x = 119,787.79

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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.