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Finding the Fourth Proportional to 131,756.51, 181,824.03 and 71,327.15

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Solution

The fourth proportional to 131,756.51, 181,824.03 and 71,327.15 is: 98,431.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,756.51 : 181,824.03 = 71,327.15 : x
  2. Step 2: Convert to fraction form
    131,756.51/181,824.03 = 71,327.15/x
  3. Step 3: Cross multiply
    131,756.51x = 181,824.03 × 71,327.15
  4. Step 4: Simplify right side
    131,756.51x = 12,968,988,952.29
  5. Step 5: Solve for x
    x = 12,968,988,952.29/131,756.51
  6. Step 6: Final answer
    x = 98,431.49

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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.