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Finding the Fourth Proportional to 156,745.28, 216,313.52 and 88,761.28

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Solution

The fourth proportional to 156,745.28, 216,313.52 and 88,761.28 is: 122,493.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,745.28 : 216,313.52 = 88,761.28 : x
  2. Step 2: Convert to fraction form
    156,745.28/216,313.52 = 88,761.28/x
  3. Step 3: Cross multiply
    156,745.28x = 216,313.52 × 88,761.28
  4. Step 4: Simplify right side
    156,745.28x = 19,200,264,916.51
  5. Step 5: Solve for x
    x = 19,200,264,916.51/156,745.28
  6. Step 6: Final answer
    x = 122,493.42

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1.5x scale

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.