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Finding the Fourth Proportional to 156,581.25, 234,871.25 and 56,718.07

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Solution

The fourth proportional to 156,581.25, 234,871.25 and 56,718.07 is: 85,076.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,581.25 : 234,871.25 = 56,718.07 : x
  2. Step 2: Convert to fraction form
    156,581.25/234,871.25 = 56,718.07/x
  3. Step 3: Cross multiply
    156,581.25x = 234,871.25 × 56,718.07
  4. Step 4: Simplify right side
    156,581.25x = 13,321,444,448.87
  5. Step 5: Solve for x
    x = 13,321,444,448.87/156,581.25
  6. Step 6: Final answer
    x = 85,076.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.