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Finding the Fourth Proportional to 163,603, 245,462.10 and 80,555.32

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Solution

The fourth proportional to 163,603, 245,462.10 and 80,555.32 is: 120,861.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,603 : 245,462.10 = 80,555.32 : x
  2. Step 2: Convert to fraction form
    163,603/245,462.10 = 80,555.32/x
  3. Step 3: Cross multiply
    163,603x = 245,462.10 × 80,555.32
  4. Step 4: Simplify right side
    163,603x = 19,773,278,013.37
  5. Step 5: Solve for x
    x = 19,773,278,013.37/163,603
  6. Step 6: Final answer
    x = 120,861.34

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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.