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Finding the Fourth Proportional to 104,163.81, 143,746.26 and 56,417.20

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Solution

The fourth proportional to 104,163.81, 143,746.26 and 56,417.20 is: 77,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,163.81 : 143,746.26 = 56,417.20 : x
  2. Step 2: Convert to fraction form
    104,163.81/143,746.26 = 56,417.20/x
  3. Step 3: Cross multiply
    104,163.81x = 143,746.26 × 56,417.20
  4. Step 4: Simplify right side
    104,163.81x = 8,109,761,499.67
  5. Step 5: Solve for x
    x = 8,109,761,499.67/104,163.81
  6. Step 6: Final answer
    x = 77,855.85

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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.