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Finding the Fourth Proportional to 163,014.48, 225,000 and 99,387.36

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Solution

The fourth proportional to 163,014.48, 225,000 and 99,387.36 is: 137,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,014.48 : 225,000 = 99,387.36 : x
  2. Step 2: Convert to fraction form
    163,014.48/225,000 = 99,387.36/x
  3. Step 3: Cross multiply
    163,014.48x = 225,000 × 99,387.36
  4. Step 4: Simplify right side
    163,014.48x = 22,362,156,000
  5. Step 5: Solve for x
    x = 22,362,156,000/163,014.48
  6. Step 6: Final answer
    x = 137,178.95

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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.