Home / 209,038.76-313,578.90-66,848.31

Finding the Fourth Proportional to 209,038.76, 313,578.90 and 66,848.31

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Solution

The fourth proportional to 209,038.76, 313,578.90 and 66,848.31 is: 100,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,038.76 : 313,578.90 = 66,848.31 : x
  2. Step 2: Convert to fraction form
    209,038.76/313,578.90 = 66,848.31/x
  3. Step 3: Cross multiply
    209,038.76x = 313,578.90 × 66,848.31
  4. Step 4: Simplify right side
    209,038.76x = 20,962,219,516.66
  5. Step 5: Solve for x
    x = 20,962,219,516.66/209,038.76
  6. Step 6: Final answer
    x = 100,279.10

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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.