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Finding the Fourth Proportional to 160,515.31, 221,518.31 and 87,923.31

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Solution

The fourth proportional to 160,515.31, 221,518.31 and 87,923.31 is: 121,338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,515.31 : 221,518.31 = 87,923.31 : x
  2. Step 2: Convert to fraction form
    160,515.31/221,518.31 = 87,923.31/x
  3. Step 3: Cross multiply
    160,515.31x = 221,518.31 × 87,923.31
  4. Step 4: Simplify right side
    160,515.31x = 19,476,622,601.19
  5. Step 5: Solve for x
    x = 19,476,622,601.19/160,515.31
  6. Step 6: Final answer
    x = 121,338.10

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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.