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Finding the Fourth Proportional to 169,320.59, 253,994.70 and 85,037.40

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Solution

The fourth proportional to 169,320.59, 253,994.70 and 85,037.40 is: 127,563.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,320.59 : 253,994.70 = 85,037.40 : x
  2. Step 2: Convert to fraction form
    169,320.59/253,994.70 = 85,037.40/x
  3. Step 3: Cross multiply
    169,320.59x = 253,994.70 × 85,037.40
  4. Step 4: Simplify right side
    169,320.59x = 21,599,048,901.78
  5. Step 5: Solve for x
    x = 21,599,048,901.78/169,320.59
  6. Step 6: Final answer
    x = 127,563.04

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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.