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Finding the Fourth Proportional to 104,406.45, 144,081 and 56,659.80

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Solution

The fourth proportional to 104,406.45, 144,081 and 56,659.80 is: 78,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,406.45 : 144,081 = 56,659.80 : x
  2. Step 2: Convert to fraction form
    104,406.45/144,081 = 56,659.80/x
  3. Step 3: Cross multiply
    104,406.45x = 144,081 × 56,659.80
  4. Step 4: Simplify right side
    104,406.45x = 8,163,600,643.80
  5. Step 5: Solve for x
    x = 8,163,600,643.80/104,406.45
  6. Step 6: Final answer
    x = 78,190.58

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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.