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Finding the Fourth Proportional to 163,855.02, 245,712.96 and 69,127.68

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Solution

The fourth proportional to 163,855.02, 245,712.96 and 69,127.68 is: 103,662.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,855.02 : 245,712.96 = 69,127.68 : x
  2. Step 2: Convert to fraction form
    163,855.02/245,712.96 = 69,127.68/x
  3. Step 3: Cross multiply
    163,855.02x = 245,712.96 × 69,127.68
  4. Step 4: Simplify right side
    163,855.02x = 16,985,566,870.73
  5. Step 5: Solve for x
    x = 16,985,566,870.73/163,855.02
  6. Step 6: Final answer
    x = 103,662.17

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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.