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Finding the Fourth Proportional to 163,939.66, 245,908.13 and 45,610.65

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Solution

The fourth proportional to 163,939.66, 245,908.13 and 45,610.65 is: 68,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,939.66 : 245,908.13 = 45,610.65 : x
  2. Step 2: Convert to fraction form
    163,939.66/245,908.13 = 45,610.65/x
  3. Step 3: Cross multiply
    163,939.66x = 245,908.13 × 45,610.65
  4. Step 4: Simplify right side
    163,939.66x = 11,216,029,421.53
  5. Step 5: Solve for x
    x = 11,216,029,421.53/163,939.66
  6. Step 6: Final answer
    x = 68,415.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.