Home / 143,394.86-215,092.26-68,287.28

Finding the Fourth Proportional to 143,394.86, 215,092.26 and 68,287.28

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Solution

The fourth proportional to 143,394.86, 215,092.26 and 68,287.28 is: 102,430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,394.86 : 215,092.26 = 68,287.28 : x
  2. Step 2: Convert to fraction form
    143,394.86/215,092.26 = 68,287.28/x
  3. Step 3: Cross multiply
    143,394.86x = 215,092.26 × 68,287.28
  4. Step 4: Simplify right side
    143,394.86x = 14,688,065,384.45
  5. Step 5: Solve for x
    x = 14,688,065,384.45/143,394.86
  6. Step 6: Final answer
    x = 102,430.91

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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.