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Finding the Fourth Proportional to 156,253.12, 215,642.64 and 88,282.64

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Solution

The fourth proportional to 156,253.12, 215,642.64 and 88,282.64 is: 121,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,253.12 : 215,642.64 = 88,282.64 : x
  2. Step 2: Convert to fraction form
    156,253.12/215,642.64 = 88,282.64/x
  3. Step 3: Cross multiply
    156,253.12x = 215,642.64 × 88,282.64
  4. Step 4: Simplify right side
    156,253.12x = 19,037,501,555.77
  5. Step 5: Solve for x
    x = 19,037,501,555.77/156,253.12
  6. Step 6: Final answer
    x = 121,837.58

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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.