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Finding the Fourth Proportional to 156,305.64, 215,710.16 and 88,325.48

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Solution

The fourth proportional to 156,305.64, 215,710.16 and 88,325.48 is: 121,893.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,305.64 : 215,710.16 = 88,325.48 : x
  2. Step 2: Convert to fraction form
    156,305.64/215,710.16 = 88,325.48/x
  3. Step 3: Cross multiply
    156,305.64x = 215,710.16 × 88,325.48
  4. Step 4: Simplify right side
    156,305.64x = 19,052,704,182.97
  5. Step 5: Solve for x
    x = 19,052,704,182.97/156,305.64
  6. Step 6: Final answer
    x = 121,893.90

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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.