Home / 103,991.02-143,507.64-58,678.61

Finding the Fourth Proportional to 103,991.02, 143,507.64 and 58,678.61

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Solution

The fourth proportional to 103,991.02, 143,507.64 and 58,678.61 is: 80,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,991.02 : 143,507.64 = 58,678.61 : x
  2. Step 2: Convert to fraction form
    103,991.02/143,507.64 = 58,678.61/x
  3. Step 3: Cross multiply
    103,991.02x = 143,507.64 × 58,678.61
  4. Step 4: Simplify right side
    103,991.02x = 8,420,828,839.58
  5. Step 5: Solve for x
    x = 8,420,828,839.58/103,991.02
  6. Step 6: Final answer
    x = 80,976.50

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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.