Home / 107,718.80-161,337.58-78,068.57

Finding the Fourth Proportional to 107,718.80, 161,337.58 and 78,068.57

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Solution

The fourth proportional to 107,718.80, 161,337.58 and 78,068.57 is: 116,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,718.80 : 161,337.58 = 78,068.57 : x
  2. Step 2: Convert to fraction form
    107,718.80/161,337.58 = 78,068.57/x
  3. Step 3: Cross multiply
    107,718.80x = 161,337.58 × 78,068.57
  4. Step 4: Simplify right side
    107,718.80x = 12,595,393,156.00
  5. Step 5: Solve for x
    x = 12,595,393,156.00/107,718.80
  6. Step 6: Final answer
    x = 116,928.46

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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.