Home / 109,075.92-150,434.64-76,917.60

Finding the Fourth Proportional to 109,075.92, 150,434.64 and 76,917.60

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Solution

The fourth proportional to 109,075.92, 150,434.64 and 76,917.60 is: 106,082.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,075.92 : 150,434.64 = 76,917.60 : x
  2. Step 2: Convert to fraction form
    109,075.92/150,434.64 = 76,917.60/x
  3. Step 3: Cross multiply
    109,075.92x = 150,434.64 × 76,917.60
  4. Step 4: Simplify right side
    109,075.92x = 11,571,071,465.66
  5. Step 5: Solve for x
    x = 11,571,071,465.66/109,075.92
  6. Step 6: Final answer
    x = 106,082.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.