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Finding the Fourth Proportional to 163,553.92, 245,356.80 and 52,720

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Solution

The fourth proportional to 163,553.92, 245,356.80 and 52,720 is: 79,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,553.92 : 245,356.80 = 52,720 : x
  2. Step 2: Convert to fraction form
    163,553.92/245,356.80 = 52,720/x
  3. Step 3: Cross multiply
    163,553.92x = 245,356.80 × 52,720
  4. Step 4: Simplify right side
    163,553.92x = 12,935,210,496
  5. Step 5: Solve for x
    x = 12,935,210,496/163,553.92
  6. Step 6: Final answer
    x = 79,088.36

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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.