Home / 113,198.61-169,358.90-81,681.24

Finding the Fourth Proportional to 113,198.61, 169,358.90 and 81,681.24

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Solution

The fourth proportional to 113,198.61, 169,358.90 and 81,681.24 is: 122,205.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,198.61 : 169,358.90 = 81,681.24 : x
  2. Step 2: Convert to fraction form
    113,198.61/169,358.90 = 81,681.24/x
  3. Step 3: Cross multiply
    113,198.61x = 169,358.90 × 81,681.24
  4. Step 4: Simplify right side
    113,198.61x = 13,833,444,548.63
  5. Step 5: Solve for x
    x = 13,833,444,548.63/113,198.61
  6. Step 6: Final answer
    x = 122,205.07

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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.