Home / 138,253.32-190,787.46-77,823.78

Finding the Fourth Proportional to 138,253.32, 190,787.46 and 77,823.78

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Solution

The fourth proportional to 138,253.32, 190,787.46 and 77,823.78 is: 107,395.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,253.32 : 190,787.46 = 77,823.78 : x
  2. Step 2: Convert to fraction form
    138,253.32/190,787.46 = 77,823.78/x
  3. Step 3: Cross multiply
    138,253.32x = 190,787.46 × 77,823.78
  4. Step 4: Simplify right side
    138,253.32x = 14,847,801,313.80
  5. Step 5: Solve for x
    x = 14,847,801,313.80/138,253.32
  6. Step 6: Final answer
    x = 107,395.62

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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.