Home / 105,580.31-158,369.19-42,399.30

Finding the Fourth Proportional to 105,580.31, 158,369.19 and 42,399.30

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Solution

The fourth proportional to 105,580.31, 158,369.19 and 42,399.30 is: 63,598.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,580.31 : 158,369.19 = 42,399.30 : x
  2. Step 2: Convert to fraction form
    105,580.31/158,369.19 = 42,399.30/x
  3. Step 3: Cross multiply
    105,580.31x = 158,369.19 × 42,399.30
  4. Step 4: Simplify right side
    105,580.31x = 6,714,742,797.57
  5. Step 5: Solve for x
    x = 6,714,742,797.57/105,580.31
  6. Step 6: Final answer
    x = 63,598.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.