Home / 107,002.20-160,349.70-78,701.40

Finding the Fourth Proportional to 107,002.20, 160,349.70 and 78,701.40

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Solution

The fourth proportional to 107,002.20, 160,349.70 and 78,701.40 is: 117,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,002.20 : 160,349.70 = 78,701.40 : x
  2. Step 2: Convert to fraction form
    107,002.20/160,349.70 = 78,701.40/x
  3. Step 3: Cross multiply
    107,002.20x = 160,349.70 × 78,701.40
  4. Step 4: Simplify right side
    107,002.20x = 12,619,745,879.58
  5. Step 5: Solve for x
    x = 12,619,745,879.58/107,002.20
  6. Step 6: Final answer
    x = 117,939.13

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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.