Home / 107,051.20-160,423.20-78,750.40

Finding the Fourth Proportional to 107,051.20, 160,423.20 and 78,750.40

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Solution

The fourth proportional to 107,051.20, 160,423.20 and 78,750.40 is: 118,012.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,051.20 : 160,423.20 = 78,750.40 : x
  2. Step 2: Convert to fraction form
    107,051.20/160,423.20 = 78,750.40/x
  3. Step 3: Cross multiply
    107,051.20x = 160,423.20 × 78,750.40
  4. Step 4: Simplify right side
    107,051.20x = 12,633,391,169.28
  5. Step 5: Solve for x
    x = 12,633,391,169.28/107,051.20
  6. Step 6: Final answer
    x = 118,012.61

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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.