Home / 107,020.20-160,376.70-78,719.40

Finding the Fourth Proportional to 107,020.20, 160,376.70 and 78,719.40

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Solution

The fourth proportional to 107,020.20, 160,376.70 and 78,719.40 is: 117,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,020.20 : 160,376.70 = 78,719.40 : x
  2. Step 2: Convert to fraction form
    107,020.20/160,376.70 = 78,719.40/x
  3. Step 3: Cross multiply
    107,020.20x = 160,376.70 × 78,719.40
  4. Step 4: Simplify right side
    107,020.20x = 12,624,757,597.98
  5. Step 5: Solve for x
    x = 12,624,757,597.98/107,020.20
  6. Step 6: Final answer
    x = 117,966.12

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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.