Home / 76,250.40-114,116.40-66,919.20

Finding the Fourth Proportional to 76,250.40, 114,116.40 and 66,919.20

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Solution

The fourth proportional to 76,250.40, 114,116.40 and 66,919.20 is: 100,151.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,250.40 : 114,116.40 = 66,919.20 : x
  2. Step 2: Convert to fraction form
    76,250.40/114,116.40 = 66,919.20/x
  3. Step 3: Cross multiply
    76,250.40x = 114,116.40 × 66,919.20
  4. Step 4: Simplify right side
    76,250.40x = 7,636,578,194.88
  5. Step 5: Solve for x
    x = 7,636,578,194.88/76,250.40
  6. Step 6: Final answer
    x = 100,151.32

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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.