Home / 129,157.55-194,027.97-76,601.51

Finding the Fourth Proportional to 129,157.55, 194,027.97 and 76,601.51

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Solution

The fourth proportional to 129,157.55, 194,027.97 and 76,601.51 is: 115,075.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,157.55 : 194,027.97 = 76,601.51 : x
  2. Step 2: Convert to fraction form
    129,157.55/194,027.97 = 76,601.51/x
  3. Step 3: Cross multiply
    129,157.55x = 194,027.97 × 76,601.51
  4. Step 4: Simplify right side
    129,157.55x = 14,862,835,484.23
  5. Step 5: Solve for x
    x = 14,862,835,484.23/129,157.55
  6. Step 6: Final answer
    x = 115,075.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.