Home / 145,856.20-218,808.60-57,112.60

Finding the Fourth Proportional to 145,856.20, 218,808.60 and 57,112.60

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Solution

The fourth proportional to 145,856.20, 218,808.60 and 57,112.60 is: 85,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,856.20 : 218,808.60 = 57,112.60 : x
  2. Step 2: Convert to fraction form
    145,856.20/218,808.60 = 57,112.60/x
  3. Step 3: Cross multiply
    145,856.20x = 218,808.60 × 57,112.60
  4. Step 4: Simplify right side
    145,856.20x = 12,496,728,048.36
  5. Step 5: Solve for x
    x = 12,496,728,048.36/145,856.20
  6. Step 6: Final answer
    x = 85,678.42

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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.