Home / 107,115.20-160,519.20-78,814.40

Finding the Fourth Proportional to 107,115.20, 160,519.20 and 78,814.40

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Solution

The fourth proportional to 107,115.20, 160,519.20 and 78,814.40 is: 118,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,115.20 : 160,519.20 = 78,814.40 : x
  2. Step 2: Convert to fraction form
    107,115.20/160,519.20 = 78,814.40/x
  3. Step 3: Cross multiply
    107,115.20x = 160,519.20 × 78,814.40
  4. Step 4: Simplify right side
    107,115.20x = 12,651,224,436.48
  5. Step 5: Solve for x
    x = 12,651,224,436.48/107,115.20
  6. Step 6: Final answer
    x = 118,108.58

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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.