Home / 105,078.72-157,573.44-38,491.20

Finding the Fourth Proportional to 105,078.72, 157,573.44 and 38,491.20

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Solution

The fourth proportional to 105,078.72, 157,573.44 and 38,491.20 is: 57,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,078.72 : 157,573.44 = 38,491.20 : x
  2. Step 2: Convert to fraction form
    105,078.72/157,573.44 = 38,491.20/x
  3. Step 3: Cross multiply
    105,078.72x = 157,573.44 × 38,491.20
  4. Step 4: Simplify right side
    105,078.72x = 6,065,190,793.73
  5. Step 5: Solve for x
    x = 6,065,190,793.73/105,078.72
  6. Step 6: Final answer
    x = 57,720.45

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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.