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Finding the Fourth Proportional to 160,330.54, 221,248.08 and 87,731.86

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Solution

The fourth proportional to 160,330.54, 221,248.08 and 87,731.86 is: 121,065.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,330.54 : 221,248.08 = 87,731.86 : x
  2. Step 2: Convert to fraction form
    160,330.54/221,248.08 = 87,731.86/x
  3. Step 3: Cross multiply
    160,330.54x = 221,248.08 × 87,731.86
  4. Step 4: Simplify right side
    160,330.54x = 19,410,505,579.83
  5. Step 5: Solve for x
    x = 19,410,505,579.83/160,330.54
  6. Step 6: Final answer
    x = 121,065.55

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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.