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Finding the Fourth Proportional to 104,152.49, 143,730.21 and 56,405.69

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Solution

The fourth proportional to 104,152.49, 143,730.21 and 56,405.69 is: 77,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,152.49 : 143,730.21 = 56,405.69 : x
  2. Step 2: Convert to fraction form
    104,152.49/143,730.21 = 56,405.69/x
  3. Step 3: Cross multiply
    104,152.49x = 143,730.21 × 56,405.69
  4. Step 4: Simplify right side
    104,152.49x = 8,107,200,950.24
  5. Step 5: Solve for x
    x = 8,107,200,950.24/104,152.49
  6. Step 6: Final answer
    x = 77,839.73

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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.