Home / 107,904.20-161,856.30-105,830.60

Finding the Fourth Proportional to 107,904.20, 161,856.30 and 105,830.60

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Solution

The fourth proportional to 107,904.20, 161,856.30 and 105,830.60 is: 158,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,904.20 : 161,856.30 = 105,830.60 : x
  2. Step 2: Convert to fraction form
    107,904.20/161,856.30 = 105,830.60/x
  3. Step 3: Cross multiply
    107,904.20x = 161,856.30 × 105,830.60
  4. Step 4: Simplify right side
    107,904.20x = 17,129,349,342.78
  5. Step 5: Solve for x
    x = 17,129,349,342.78/107,904.20
  6. Step 6: Final answer
    x = 158,745.90

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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.