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Finding the Fourth Proportional to 163,687.41, 245,448.06 and 74,864.81

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Solution

The fourth proportional to 163,687.41, 245,448.06 and 74,864.81 is: 112,259.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,687.41 : 245,448.06 = 74,864.81 : x
  2. Step 2: Convert to fraction form
    163,687.41/245,448.06 = 74,864.81/x
  3. Step 3: Cross multiply
    163,687.41x = 245,448.06 × 74,864.81
  4. Step 4: Simplify right side
    163,687.41x = 18,375,421,149.53
  5. Step 5: Solve for x
    x = 18,375,421,149.53/163,687.41
  6. Step 6: Final answer
    x = 112,259.22

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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.