Home / 145,865.31-218,710.38-57,012.96

Finding the Fourth Proportional to 145,865.31, 218,710.38 and 57,012.96

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Solution

The fourth proportional to 145,865.31, 218,710.38 and 57,012.96 is: 85,485.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,865.31 : 218,710.38 = 57,012.96 : x
  2. Step 2: Convert to fraction form
    145,865.31/218,710.38 = 57,012.96/x
  3. Step 3: Cross multiply
    145,865.31x = 218,710.38 × 57,012.96
  4. Step 4: Simplify right side
    145,865.31x = 12,469,326,146.52
  5. Step 5: Solve for x
    x = 12,469,326,146.52/145,865.31
  6. Step 6: Final answer
    x = 85,485.21

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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.