Home / 78,518.68-117,505.86-75,252.76

Finding the Fourth Proportional to 78,518.68, 117,505.86 and 75,252.76

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Solution

The fourth proportional to 78,518.68, 117,505.86 and 75,252.76 is: 112,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,518.68 : 117,505.86 = 75,252.76 : x
  2. Step 2: Convert to fraction form
    78,518.68/117,505.86 = 75,252.76/x
  3. Step 3: Cross multiply
    78,518.68x = 117,505.86 × 75,252.76
  4. Step 4: Simplify right side
    78,518.68x = 8,842,640,281.17
  5. Step 5: Solve for x
    x = 8,842,640,281.17/78,518.68
  6. Step 6: Final answer
    x = 112,618.30

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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.