Home / 342,128.10-513,043.64-131,618.28

Finding the Fourth Proportional to 342,128.10, 513,043.64 and 131,618.28

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Solution

The fourth proportional to 342,128.10, 513,043.64 and 131,618.28 is: 197,370.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,128.10 : 513,043.64 = 131,618.28 : x
  2. Step 2: Convert to fraction form
    342,128.10/513,043.64 = 131,618.28/x
  3. Step 3: Cross multiply
    342,128.10x = 513,043.64 × 131,618.28
  4. Step 4: Simplify right side
    342,128.10x = 67,525,921,461.74
  5. Step 5: Solve for x
    x = 67,525,921,461.74/342,128.10
  6. Step 6: Final answer
    x = 197,370.29

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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.