Home / 104,905.80-144,771.64-57,159.12

Finding the Fourth Proportional to 104,905.80, 144,771.64 and 57,159.12

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Solution

The fourth proportional to 104,905.80, 144,771.64 and 57,159.12 is: 78,880.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,905.80 : 144,771.64 = 57,159.12 : x
  2. Step 2: Convert to fraction form
    104,905.80/144,771.64 = 57,159.12/x
  3. Step 3: Cross multiply
    104,905.80x = 144,771.64 × 57,159.12
  4. Step 4: Simplify right side
    104,905.80x = 8,275,019,543.36
  5. Step 5: Solve for x
    x = 8,275,019,543.36/104,905.80
  6. Step 6: Final answer
    x = 78,880.48

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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.