Home / 107,339.48-161,065.92-77,999.84

Finding the Fourth Proportional to 107,339.48, 161,065.92 and 77,999.84

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Solution

The fourth proportional to 107,339.48, 161,065.92 and 77,999.84 is: 117,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,339.48 : 161,065.92 = 77,999.84 : x
  2. Step 2: Convert to fraction form
    107,339.48/161,065.92 = 77,999.84/x
  3. Step 3: Cross multiply
    107,339.48x = 161,065.92 × 77,999.84
  4. Step 4: Simplify right side
    107,339.48x = 12,563,115,989.45
  5. Step 5: Solve for x
    x = 12,563,115,989.45/107,339.48
  6. Step 6: Final answer
    x = 117,040.96

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1.5x scale

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.