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Finding the Fourth Proportional to 131,062.51, 180,864.60 and 73,711.32

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Solution

The fourth proportional to 131,062.51, 180,864.60 and 73,711.32 is: 101,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,062.51 : 180,864.60 = 73,711.32 : x
  2. Step 2: Convert to fraction form
    131,062.51/180,864.60 = 73,711.32/x
  3. Step 3: Cross multiply
    131,062.51x = 180,864.60 × 73,711.32
  4. Step 4: Simplify right side
    131,062.51x = 13,331,767,452.61
  5. Step 5: Solve for x
    x = 13,331,767,452.61/131,062.51
  6. Step 6: Final answer
    x = 101,720.68

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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.