Home / 160,731.90-221,815.29-89,118.60

Finding the Fourth Proportional to 160,731.90, 221,815.29 and 89,118.60

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Solution

The fourth proportional to 160,731.90, 221,815.29 and 89,118.60 is: 122,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,731.90 : 221,815.29 = 89,118.60 : x
  2. Step 2: Convert to fraction form
    160,731.90/221,815.29 = 89,118.60/x
  3. Step 3: Cross multiply
    160,731.90x = 221,815.29 × 89,118.60
  4. Step 4: Simplify right side
    160,731.90x = 19,767,868,103.39
  5. Step 5: Solve for x
    x = 19,767,868,103.39/160,731.90
  6. Step 6: Final answer
    x = 122,986.59

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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.