Home / 78,816.20-118,224.30-74,150.60

Finding the Fourth Proportional to 78,816.20, 118,224.30 and 74,150.60

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Solution

The fourth proportional to 78,816.20, 118,224.30 and 74,150.60 is: 111,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,816.20 : 118,224.30 = 74,150.60 : x
  2. Step 2: Convert to fraction form
    78,816.20/118,224.30 = 74,150.60/x
  3. Step 3: Cross multiply
    78,816.20x = 118,224.30 × 74,150.60
  4. Step 4: Simplify right side
    78,816.20x = 8,766,402,779.58
  5. Step 5: Solve for x
    x = 8,766,402,779.58/78,816.20
  6. Step 6: Final answer
    x = 111,225.90

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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.