Home / 107,664.48-161,295.84-78,009.84

Finding the Fourth Proportional to 107,664.48, 161,295.84 and 78,009.84

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Solution

The fourth proportional to 107,664.48, 161,295.84 and 78,009.84 is: 116,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,664.48 : 161,295.84 = 78,009.84 : x
  2. Step 2: Convert to fraction form
    107,664.48/161,295.84 = 78,009.84/x
  3. Step 3: Cross multiply
    107,664.48x = 161,295.84 × 78,009.84
  4. Step 4: Simplify right side
    107,664.48x = 12,582,662,671.07
  5. Step 5: Solve for x
    x = 12,582,662,671.07/107,664.48
  6. Step 6: Final answer
    x = 116,869.21

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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.