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Finding the Fourth Proportional to 124,580.77, 171,861.66 and 81,541.31

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Solution

The fourth proportional to 124,580.77, 171,861.66 and 81,541.31 is: 112,487.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,580.77 : 171,861.66 = 81,541.31 : x
  2. Step 2: Convert to fraction form
    124,580.77/171,861.66 = 81,541.31/x
  3. Step 3: Cross multiply
    124,580.77x = 171,861.66 × 81,541.31
  4. Step 4: Simplify right side
    124,580.77x = 14,013,824,035.87
  5. Step 5: Solve for x
    x = 14,013,824,035.87/124,580.77
  6. Step 6: Final answer
    x = 112,487.86

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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.