Home / 103,621.49-143,002.91-61,179.11

Finding the Fourth Proportional to 103,621.49, 143,002.91 and 61,179.11

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Solution

The fourth proportional to 103,621.49, 143,002.91 and 61,179.11 is: 84,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.49 : 143,002.91 = 61,179.11 : x
  2. Step 2: Convert to fraction form
    103,621.49/143,002.91 = 61,179.11/x
  3. Step 3: Cross multiply
    103,621.49x = 143,002.91 × 61,179.11
  4. Step 4: Simplify right side
    103,621.49x = 8,748,790,761.21
  5. Step 5: Solve for x
    x = 8,748,790,761.21/103,621.49
  6. Step 6: Final answer
    x = 84,430.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.