Home / 78,748.80-118,123.20-26,163.60

Finding the Fourth Proportional to 78,748.80, 118,123.20 and 26,163.60

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Solution

The fourth proportional to 78,748.80, 118,123.20 and 26,163.60 is: 39,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,748.80 : 118,123.20 = 26,163.60 : x
  2. Step 2: Convert to fraction form
    78,748.80/118,123.20 = 26,163.60/x
  3. Step 3: Cross multiply
    78,748.80x = 118,123.20 × 26,163.60
  4. Step 4: Simplify right side
    78,748.80x = 3,090,528,155.52
  5. Step 5: Solve for x
    x = 3,090,528,155.52/78,748.80
  6. Step 6: Final answer
    x = 39,245.40

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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.