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Finding the Fourth Proportional to 178,867.65, 246,860.69 and 115,390.11

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Solution

The fourth proportional to 178,867.65, 246,860.69 and 115,390.11 is: 159,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,867.65 : 246,860.69 = 115,390.11 : x
  2. Step 2: Convert to fraction form
    178,867.65/246,860.69 = 115,390.11/x
  3. Step 3: Cross multiply
    178,867.65x = 246,860.69 × 115,390.11
  4. Step 4: Simplify right side
    178,867.65x = 28,485,281,596.83
  5. Step 5: Solve for x
    x = 28,485,281,596.83/178,867.65
  6. Step 6: Final answer
    x = 159,253.40

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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.