Home / 105,132.24-145,080.36-57,385.44

Finding the Fourth Proportional to 105,132.24, 145,080.36 and 57,385.44

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Solution

The fourth proportional to 105,132.24, 145,080.36 and 57,385.44 is: 79,190.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,132.24 : 145,080.36 = 57,385.44 : x
  2. Step 2: Convert to fraction form
    105,132.24/145,080.36 = 57,385.44/x
  3. Step 3: Cross multiply
    105,132.24x = 145,080.36 × 57,385.44
  4. Step 4: Simplify right side
    105,132.24x = 8,325,500,293.96
  5. Step 5: Solve for x
    x = 8,325,500,293.96/105,132.24
  6. Step 6: Final answer
    x = 79,190.74

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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.