Home / 100,436.67-138,597.93-55,113.53

Finding the Fourth Proportional to 100,436.67, 138,597.93 and 55,113.53

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Solution

The fourth proportional to 100,436.67, 138,597.93 and 55,113.53 is: 76,054.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,436.67 : 138,597.93 = 55,113.53 : x
  2. Step 2: Convert to fraction form
    100,436.67/138,597.93 = 55,113.53/x
  3. Step 3: Cross multiply
    100,436.67x = 138,597.93 × 55,113.53
  4. Step 4: Simplify right side
    100,436.67x = 7,638,620,480.00
  5. Step 5: Solve for x
    x = 7,638,620,480.00/100,436.67
  6. Step 6: Final answer
    x = 76,054.10

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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.