Home / 77,218.20-116,000.10-74,069.40

Finding the Fourth Proportional to 77,218.20, 116,000.10 and 74,069.40

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Solution

The fourth proportional to 77,218.20, 116,000.10 and 74,069.40 is: 111,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,218.20 : 116,000.10 = 74,069.40 : x
  2. Step 2: Convert to fraction form
    77,218.20/116,000.10 = 74,069.40/x
  3. Step 3: Cross multiply
    77,218.20x = 116,000.10 × 74,069.40
  4. Step 4: Simplify right side
    77,218.20x = 8,592,057,806.94
  5. Step 5: Solve for x
    x = 8,592,057,806.94/77,218.20
  6. Step 6: Final answer
    x = 111,269.85

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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.