Home / 100,437.72-138,604.03-57,418.14

Finding the Fourth Proportional to 100,437.72, 138,604.03 and 57,418.14

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Solution

The fourth proportional to 100,437.72, 138,604.03 and 57,418.14 is: 79,237.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,437.72 : 138,604.03 = 57,418.14 : x
  2. Step 2: Convert to fraction form
    100,437.72/138,604.03 = 57,418.14/x
  3. Step 3: Cross multiply
    100,437.72x = 138,604.03 × 57,418.14
  4. Step 4: Simplify right side
    100,437.72x = 7,958,385,599.10
  5. Step 5: Solve for x
    x = 7,958,385,599.10/100,437.72
  6. Step 6: Final answer
    x = 79,237.02

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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.