Home / 99,362.88-137,121.36-54,041.28

Finding the Fourth Proportional to 99,362.88, 137,121.36 and 54,041.28

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Solution

The fourth proportional to 99,362.88, 137,121.36 and 54,041.28 is: 74,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,362.88 : 137,121.36 = 54,041.28 : x
  2. Step 2: Convert to fraction form
    99,362.88/137,121.36 = 54,041.28/x
  3. Step 3: Cross multiply
    99,362.88x = 137,121.36 × 54,041.28
  4. Step 4: Simplify right side
    99,362.88x = 7,410,213,809.74
  5. Step 5: Solve for x
    x = 7,410,213,809.74/99,362.88
  6. Step 6: Final answer
    x = 74,577.28

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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.