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Finding the Fourth Proportional to 342,118.99, 513,199.59 and 131,757.13

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Solution

The fourth proportional to 342,118.99, 513,199.59 and 131,757.13 is: 197,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,118.99 : 513,199.59 = 131,757.13 : x
  2. Step 2: Convert to fraction form
    342,118.99/513,199.59 = 131,757.13/x
  3. Step 3: Cross multiply
    342,118.99x = 513,199.59 × 131,757.13
  4. Step 4: Simplify right side
    342,118.99x = 67,617,705,095.58
  5. Step 5: Solve for x
    x = 67,617,705,095.58/342,118.99
  6. Step 6: Final answer
    x = 197,643.82

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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.