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Finding the Fourth Proportional to 77,466.70, 116,200.05 and 74,186.20

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Solution

The fourth proportional to 77,466.70, 116,200.05 and 74,186.20 is: 111,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,466.70 : 116,200.05 = 74,186.20 : x
  2. Step 2: Convert to fraction form
    77,466.70/116,200.05 = 74,186.20/x
  3. Step 3: Cross multiply
    77,466.70x = 116,200.05 × 74,186.20
  4. Step 4: Simplify right side
    77,466.70x = 8,620,440,149.31
  5. Step 5: Solve for x
    x = 8,620,440,149.31/77,466.70
  6. Step 6: Final answer
    x = 111,279.30

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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.