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Finding the Fourth Proportional to 160,806.71, 221,840.48 and 100,392.26

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Solution

The fourth proportional to 160,806.71, 221,840.48 and 100,392.26 is: 138,495.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,806.71 : 221,840.48 = 100,392.26 : x
  2. Step 2: Convert to fraction form
    160,806.71/221,840.48 = 100,392.26/x
  3. Step 3: Cross multiply
    160,806.71x = 221,840.48 × 100,392.26
  4. Step 4: Simplify right side
    160,806.71x = 22,271,065,535.52
  5. Step 5: Solve for x
    x = 22,271,065,535.52/160,806.71
  6. Step 6: Final answer
    x = 138,495.88

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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.