Home / 107,059.20-160,435.20-78,758.40

Finding the Fourth Proportional to 107,059.20, 160,435.20 and 78,758.40

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Solution

The fourth proportional to 107,059.20, 160,435.20 and 78,758.40 is: 118,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,059.20 : 160,435.20 = 78,758.40 : x
  2. Step 2: Convert to fraction form
    107,059.20/160,435.20 = 78,758.40/x
  3. Step 3: Cross multiply
    107,059.20x = 160,435.20 × 78,758.40
  4. Step 4: Simplify right side
    107,059.20x = 12,635,619,655.68
  5. Step 5: Solve for x
    x = 12,635,619,655.68/107,059.20
  6. Step 6: Final answer
    x = 118,024.60

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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.