Home / 160,731.28-221,808.80-89,109.46

Finding the Fourth Proportional to 160,731.28, 221,808.80 and 89,109.46

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Solution

The fourth proportional to 160,731.28, 221,808.80 and 89,109.46 is: 122,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,731.28 : 221,808.80 = 89,109.46 : x
  2. Step 2: Convert to fraction form
    160,731.28/221,808.80 = 89,109.46/x
  3. Step 3: Cross multiply
    160,731.28x = 221,808.80 × 89,109.46
  4. Step 4: Simplify right side
    160,731.28x = 19,765,262,391.25
  5. Step 5: Solve for x
    x = 19,765,262,391.25/160,731.28
  6. Step 6: Final answer
    x = 122,970.85

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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.