Home / 105,320.56-145,342.38-57,574.26

Finding the Fourth Proportional to 105,320.56, 145,342.38 and 57,574.26

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Solution

The fourth proportional to 105,320.56, 145,342.38 and 57,574.26 is: 79,452.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,320.56 : 145,342.38 = 57,574.26 : x
  2. Step 2: Convert to fraction form
    105,320.56/145,342.38 = 57,574.26/x
  3. Step 3: Cross multiply
    105,320.56x = 145,342.38 × 57,574.26
  4. Step 4: Simplify right side
    105,320.56x = 8,367,979,975.14
  5. Step 5: Solve for x
    x = 8,367,979,975.14/105,320.56
  6. Step 6: Final answer
    x = 79,452.48

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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.