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Finding the Fourth Proportional to 163,070.29, 245,072 and 80,022.61

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Solution

The fourth proportional to 163,070.29, 245,072 and 80,022.61 is: 120,262.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,070.29 : 245,072 = 80,022.61 : x
  2. Step 2: Convert to fraction form
    163,070.29/245,072 = 80,022.61/x
  3. Step 3: Cross multiply
    163,070.29x = 245,072 × 80,022.61
  4. Step 4: Simplify right side
    163,070.29x = 19,611,301,077.92
  5. Step 5: Solve for x
    x = 19,611,301,077.92/163,070.29
  6. Step 6: Final answer
    x = 120,262.87

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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.