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Finding the Fourth Proportional to 104,178.59, 143,765.57 and 56,431.82

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Solution

The fourth proportional to 104,178.59, 143,765.57 and 56,431.82 is: 77,875.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,178.59 : 143,765.57 = 56,431.82 : x
  2. Step 2: Convert to fraction form
    104,178.59/143,765.57 = 56,431.82/x
  3. Step 3: Cross multiply
    104,178.59x = 143,765.57 × 56,431.82
  4. Step 4: Simplify right side
    104,178.59x = 8,112,951,767.45
  5. Step 5: Solve for x
    x = 8,112,951,767.45/104,178.59
  6. Step 6: Final answer
    x = 77,875.43

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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.