Home / 105,199.62-145,169.10-57,443.28

Finding the Fourth Proportional to 105,199.62, 145,169.10 and 57,443.28

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Solution

The fourth proportional to 105,199.62, 145,169.10 and 57,443.28 is: 79,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,199.62 : 145,169.10 = 57,443.28 : x
  2. Step 2: Convert to fraction form
    105,199.62/145,169.10 = 57,443.28/x
  3. Step 3: Cross multiply
    105,199.62x = 145,169.10 × 57,443.28
  4. Step 4: Simplify right side
    105,199.62x = 8,338,989,258.65
  5. Step 5: Solve for x
    x = 8,338,989,258.65/105,199.62
  6. Step 6: Final answer
    x = 79,268.25

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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.