Home / 89,715.52-135,041.20-76,185.28

Finding the Fourth Proportional to 89,715.52, 135,041.20 and 76,185.28

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Solution

The fourth proportional to 89,715.52, 135,041.20 and 76,185.28 is: 114,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,715.52 : 135,041.20 = 76,185.28 : x
  2. Step 2: Convert to fraction form
    89,715.52/135,041.20 = 76,185.28/x
  3. Step 3: Cross multiply
    89,715.52x = 135,041.20 × 76,185.28
  4. Step 4: Simplify right side
    89,715.52x = 10,288,151,633.54
  5. Step 5: Solve for x
    x = 10,288,151,633.54/89,715.52
  6. Step 6: Final answer
    x = 114,675.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.