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Finding the Fourth Proportional to 129,559.90, 194,443.53 and 67,248.22

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Solution

The fourth proportional to 129,559.90, 194,443.53 and 67,248.22 is: 100,926.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,559.90 : 194,443.53 = 67,248.22 : x
  2. Step 2: Convert to fraction form
    129,559.90/194,443.53 = 67,248.22/x
  3. Step 3: Cross multiply
    129,559.90x = 194,443.53 × 67,248.22
  4. Step 4: Simplify right side
    129,559.90x = 13,075,979,974.56
  5. Step 5: Solve for x
    x = 13,075,979,974.56/129,559.90
  6. Step 6: Final answer
    x = 100,926.14

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1.5x scale

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.