Home / 76,912.20-115,368.30-73,283.40

Finding the Fourth Proportional to 76,912.20, 115,368.30 and 73,283.40

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Solution

The fourth proportional to 76,912.20, 115,368.30 and 73,283.40 is: 109,925.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912.20 : 115,368.30 = 73,283.40 : x
  2. Step 2: Convert to fraction form
    76,912.20/115,368.30 = 73,283.40/x
  3. Step 3: Cross multiply
    76,912.20x = 115,368.30 × 73,283.40
  4. Step 4: Simplify right side
    76,912.20x = 8,454,581,276.22
  5. Step 5: Solve for x
    x = 8,454,581,276.22/76,912.20
  6. Step 6: Final answer
    x = 109,925.10

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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.