Home / 105,424.72-145,574.77-75,302.44

Finding the Fourth Proportional to 105,424.72, 145,574.77 and 75,302.44

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Solution

The fourth proportional to 105,424.72, 145,574.77 and 75,302.44 is: 103,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,424.72 : 145,574.77 = 75,302.44 : x
  2. Step 2: Convert to fraction form
    105,424.72/145,574.77 = 75,302.44/x
  3. Step 3: Cross multiply
    105,424.72x = 145,574.77 × 75,302.44
  4. Step 4: Simplify right side
    105,424.72x = 10,962,135,383.44
  5. Step 5: Solve for x
    x = 10,962,135,383.44/105,424.72
  6. Step 6: Final answer
    x = 103,980.69

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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.