Home / 131,681.82-181,720.39-71,252.58

Finding the Fourth Proportional to 131,681.82, 181,720.39 and 71,252.58

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Solution

The fourth proportional to 131,681.82, 181,720.39 and 71,252.58 is: 98,328.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,681.82 : 181,720.39 = 71,252.58 : x
  2. Step 2: Convert to fraction form
    131,681.82/181,720.39 = 71,252.58/x
  3. Step 3: Cross multiply
    131,681.82x = 181,720.39 × 71,252.58
  4. Step 4: Simplify right side
    131,681.82x = 12,948,046,626.11
  5. Step 5: Solve for x
    x = 12,948,046,626.11/131,681.82
  6. Step 6: Final answer
    x = 98,328.28

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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.