Home / 100,328.76-138,454.83-57,313.98

Finding the Fourth Proportional to 100,328.76, 138,454.83 and 57,313.98

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Solution

The fourth proportional to 100,328.76, 138,454.83 and 57,313.98 is: 79,093.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.76 : 138,454.83 = 57,313.98 : x
  2. Step 2: Convert to fraction form
    100,328.76/138,454.83 = 57,313.98/x
  3. Step 3: Cross multiply
    100,328.76x = 138,454.83 × 57,313.98
  4. Step 4: Simplify right side
    100,328.76x = 7,935,397,357.52
  5. Step 5: Solve for x
    x = 7,935,397,357.52/100,328.76
  6. Step 6: Final answer
    x = 79,093.94

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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.