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Finding the Fourth Proportional to 163,875, 245,583.88 and 123,861

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Solution

The fourth proportional to 163,875, 245,583.88 and 123,861 is: 185,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,875 : 245,583.88 = 123,861 : x
  2. Step 2: Convert to fraction form
    163,875/245,583.88 = 123,861/x
  3. Step 3: Cross multiply
    163,875x = 245,583.88 × 123,861
  4. Step 4: Simplify right side
    163,875x = 30,418,264,960.68
  5. Step 5: Solve for x
    x = 30,418,264,960.68/163,875
  6. Step 6: Final answer
    x = 185,618.70

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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.