Home / 131,781.51-181,858.91-71,352.81

Finding the Fourth Proportional to 131,781.51, 181,858.91 and 71,352.81

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Solution

The fourth proportional to 131,781.51, 181,858.91 and 71,352.81 is: 98,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,781.51 : 181,858.91 = 71,352.81 : x
  2. Step 2: Convert to fraction form
    131,781.51/181,858.91 = 71,352.81/x
  3. Step 3: Cross multiply
    131,781.51x = 181,858.91 × 71,352.81
  4. Step 4: Simplify right side
    131,781.51x = 12,976,144,252.04
  5. Step 5: Solve for x
    x = 12,976,144,252.04/131,781.51
  6. Step 6: Final answer
    x = 98,467.11

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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.