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Finding the Fourth Proportional to 104,253.76, 143,869.62 and 56,506.60

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Solution

The fourth proportional to 104,253.76, 143,869.62 and 56,506.60 is: 77,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,253.76 : 143,869.62 = 56,506.60 : x
  2. Step 2: Convert to fraction form
    104,253.76/143,869.62 = 56,506.60/x
  3. Step 3: Cross multiply
    104,253.76x = 143,869.62 × 56,506.60
  4. Step 4: Simplify right side
    104,253.76x = 8,129,583,069.49
  5. Step 5: Solve for x
    x = 8,129,583,069.49/104,253.76
  6. Step 6: Final answer
    x = 77,978.80

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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.