Home / 100,436.58-138,597.66-55,113.48

Finding the Fourth Proportional to 100,436.58, 138,597.66 and 55,113.48

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Solution

The fourth proportional to 100,436.58, 138,597.66 and 55,113.48 is: 76,053.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,436.58 : 138,597.66 = 55,113.48 : x
  2. Step 2: Convert to fraction form
    100,436.58/138,597.66 = 55,113.48/x
  3. Step 3: Cross multiply
    100,436.58x = 138,597.66 × 55,113.48
  4. Step 4: Simplify right side
    100,436.58x = 7,638,599,362.46
  5. Step 5: Solve for x
    x = 7,638,599,362.46/100,436.58
  6. Step 6: Final answer
    x = 76,053.96

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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.