Home / 143,347.48-197,807.37-78,813.25

Finding the Fourth Proportional to 143,347.48, 197,807.37 and 78,813.25

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Solution

The fourth proportional to 143,347.48, 197,807.37 and 78,813.25 is: 108,755.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,347.48 : 197,807.37 = 78,813.25 : x
  2. Step 2: Convert to fraction form
    143,347.48/197,807.37 = 78,813.25/x
  3. Step 3: Cross multiply
    143,347.48x = 197,807.37 × 78,813.25
  4. Step 4: Simplify right side
    143,347.48x = 15,589,841,703.65
  5. Step 5: Solve for x
    x = 15,589,841,703.65/143,347.48
  6. Step 6: Final answer
    x = 108,755.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.