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Finding the Fourth Proportional to 169,187.40, 253,785.15 and 56,871.45

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Solution

The fourth proportional to 169,187.40, 253,785.15 and 56,871.45 is: 85,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,187.40 : 253,785.15 = 56,871.45 : x
  2. Step 2: Convert to fraction form
    169,187.40/253,785.15 = 56,871.45/x
  3. Step 3: Cross multiply
    169,187.40x = 253,785.15 × 56,871.45
  4. Step 4: Simplify right side
    169,187.40x = 14,433,129,468.97
  5. Step 5: Solve for x
    x = 14,433,129,468.97/169,187.40
  6. Step 6: Final answer
    x = 85,308.54

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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.