Home / 138,350.66-190,951.71-90,586.58

Finding the Fourth Proportional to 138,350.66, 190,951.71 and 90,586.58

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Solution

The fourth proportional to 138,350.66, 190,951.71 and 90,586.58 is: 125,027.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,350.66 : 190,951.71 = 90,586.58 : x
  2. Step 2: Convert to fraction form
    138,350.66/190,951.71 = 90,586.58/x
  3. Step 3: Cross multiply
    138,350.66x = 190,951.71 × 90,586.58
  4. Step 4: Simplify right side
    138,350.66x = 17,297,662,354.05
  5. Step 5: Solve for x
    x = 17,297,662,354.05/138,350.66
  6. Step 6: Final answer
    x = 125,027.68

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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.