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Finding the Fourth Proportional to 104,065.60, 143,610.90 and 56,318.94

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Solution

The fourth proportional to 104,065.60, 143,610.90 and 56,318.94 is: 77,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,065.60 : 143,610.90 = 56,318.94 : x
  2. Step 2: Convert to fraction form
    104,065.60/143,610.90 = 56,318.94/x
  3. Step 3: Cross multiply
    104,065.60x = 143,610.90 × 56,318.94
  4. Step 4: Simplify right side
    104,065.60x = 8,088,013,660.45
  5. Step 5: Solve for x
    x = 8,088,013,660.45/104,065.60
  6. Step 6: Final answer
    x = 77,720.34

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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.