Home / 101,629.08-139,935.06-90,278.82

Finding the Fourth Proportional to 101,629.08, 139,935.06 and 90,278.82

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Solution

The fourth proportional to 101,629.08, 139,935.06 and 90,278.82 is: 124,306.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,629.08 : 139,935.06 = 90,278.82 : x
  2. Step 2: Convert to fraction form
    101,629.08/139,935.06 = 90,278.82/x
  3. Step 3: Cross multiply
    101,629.08x = 139,935.06 × 90,278.82
  4. Step 4: Simplify right side
    101,629.08x = 12,633,172,093.43
  5. Step 5: Solve for x
    x = 12,633,172,093.43/101,629.08
  6. Step 6: Final answer
    x = 124,306.67

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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.