Home / 101,221.72-139,703.06-58,804.85

Finding the Fourth Proportional to 101,221.72, 139,703.06 and 58,804.85

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Solution

The fourth proportional to 101,221.72, 139,703.06 and 58,804.85 is: 81,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,221.72 : 139,703.06 = 58,804.85 : x
  2. Step 2: Convert to fraction form
    101,221.72/139,703.06 = 58,804.85/x
  3. Step 3: Cross multiply
    101,221.72x = 139,703.06 × 58,804.85
  4. Step 4: Simplify right side
    101,221.72x = 8,215,217,984.11
  5. Step 5: Solve for x
    x = 8,215,217,984.11/101,221.72
  6. Step 6: Final answer
    x = 81,160.63

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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.