Home / 342,138.32-513,208.12-131,875.28

Finding the Fourth Proportional to 342,138.32, 513,208.12 and 131,875.28

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Solution

The fourth proportional to 342,138.32, 513,208.12 and 131,875.28 is: 197,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,138.32 : 513,208.12 = 131,875.28 : x
  2. Step 2: Convert to fraction form
    342,138.32/513,208.12 = 131,875.28/x
  3. Step 3: Cross multiply
    342,138.32x = 513,208.12 × 131,875.28
  4. Step 4: Simplify right side
    342,138.32x = 67,679,464,523.27
  5. Step 5: Solve for x
    x = 67,679,464,523.27/342,138.32
  6. Step 6: Final answer
    x = 197,813.17

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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.