Home / 100,034.37-138,041.78-54,703.35

Finding the Fourth Proportional to 100,034.37, 138,041.78 and 54,703.35

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Solution

The fourth proportional to 100,034.37, 138,041.78 and 54,703.35 is: 75,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,034.37 : 138,041.78 = 54,703.35 : x
  2. Step 2: Convert to fraction form
    100,034.37/138,041.78 = 54,703.35/x
  3. Step 3: Cross multiply
    100,034.37x = 138,041.78 × 54,703.35
  4. Step 4: Simplify right side
    100,034.37x = 7,551,347,532.45
  5. Step 5: Solve for x
    x = 7,551,347,532.45/100,034.37
  6. Step 6: Final answer
    x = 75,487.53

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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.