Home / 77,444.20-116,166.30-72,778.60

Finding the Fourth Proportional to 77,444.20, 116,166.30 and 72,778.60

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Solution

The fourth proportional to 77,444.20, 116,166.30 and 72,778.60 is: 109,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,444.20 : 116,166.30 = 72,778.60 : x
  2. Step 2: Convert to fraction form
    77,444.20/116,166.30 = 72,778.60/x
  3. Step 3: Cross multiply
    77,444.20x = 116,166.30 × 72,778.60
  4. Step 4: Simplify right side
    77,444.20x = 8,454,420,681.18
  5. Step 5: Solve for x
    x = 8,454,420,681.18/77,444.20
  6. Step 6: Final answer
    x = 109,167.90

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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.