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Finding the Fourth Proportional to 155,365.01, 214,371.52 and 90,821.71

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Solution

The fourth proportional to 155,365.01, 214,371.52 and 90,821.71 is: 125,315.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,365.01 : 214,371.52 = 90,821.71 : x
  2. Step 2: Convert to fraction form
    155,365.01/214,371.52 = 90,821.71/x
  3. Step 3: Cross multiply
    155,365.01x = 214,371.52 × 90,821.71
  4. Step 4: Simplify right side
    155,365.01x = 19,469,587,258.72
  5. Step 5: Solve for x
    x = 19,469,587,258.72/155,365.01
  6. Step 6: Final answer
    x = 125,315.14

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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.