Home / 100,533.27-138,738.81-56,922.48

Finding the Fourth Proportional to 100,533.27, 138,738.81 and 56,922.48

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Solution

The fourth proportional to 100,533.27, 138,738.81 and 56,922.48 is: 78,554.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,533.27 : 138,738.81 = 56,922.48 : x
  2. Step 2: Convert to fraction form
    100,533.27/138,738.81 = 56,922.48/x
  3. Step 3: Cross multiply
    100,533.27x = 138,738.81 × 56,922.48
  4. Step 4: Simplify right side
    100,533.27x = 7,897,357,137.45
  5. Step 5: Solve for x
    x = 7,897,357,137.45/100,533.27
  6. Step 6: Final answer
    x = 78,554.66

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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.