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Finding the Fourth Proportional to 105,245.64, 145,239.12 and 59,921.64

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Solution

The fourth proportional to 105,245.64, 145,239.12 and 59,921.64 is: 82,691.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,245.64 : 145,239.12 = 59,921.64 : x
  2. Step 2: Convert to fraction form
    105,245.64/145,239.12 = 59,921.64/x
  3. Step 3: Cross multiply
    105,245.64x = 145,239.12 × 59,921.64
  4. Step 4: Simplify right side
    105,245.64x = 8,702,966,262.56
  5. Step 5: Solve for x
    x = 8,702,966,262.56/105,245.64
  6. Step 6: Final answer
    x = 82,691.94

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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.