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Finding the Fourth Proportional to 89,632.80, 134,254.80 and 74,080.80

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Solution

The fourth proportional to 89,632.80, 134,254.80 and 74,080.80 is: 110,960.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,632.80 : 134,254.80 = 74,080.80 : x
  2. Step 2: Convert to fraction form
    89,632.80/134,254.80 = 74,080.80/x
  3. Step 3: Cross multiply
    89,632.80x = 134,254.80 × 74,080.80
  4. Step 4: Simplify right side
    89,632.80x = 9,945,702,987.84
  5. Step 5: Solve for x
    x = 9,945,702,987.84/89,632.80
  6. Step 6: Final answer
    x = 110,960.53

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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.