Home / 78,801,784.20-118,202,676.30-74,337,679.80

Finding the Fourth Proportional to 78,801,784.20, 118,202,676.30 and 74,337,679.80

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Solution

The fourth proportional to 78,801,784.20, 118,202,676.30 and 74,337,679.80 is: 111,506,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,801,784.20 : 118,202,676.30 = 74,337,679.80 : x
  2. Step 2: Convert to fraction form
    78,801,784.20/118,202,676.30 = 74,337,679.80/x
  3. Step 3: Cross multiply
    78,801,784.20x = 118,202,676.30 × 74,337,679.80
  4. Step 4: Simplify right side
    78,801,784.20x = 8,786,912,702,292,448
  5. Step 5: Solve for x
    x = 8,786,912,702,292,448/78,801,784.20
  6. Step 6: Final answer
    x = 111,506,519.70

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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.