Home / 209,113.08-313,493.38-90,695.28

Finding the Fourth Proportional to 209,113.08, 313,493.38 and 90,695.28

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Solution

The fourth proportional to 209,113.08, 313,493.38 and 90,695.28 is: 135,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,113.08 : 313,493.38 = 90,695.28 : x
  2. Step 2: Convert to fraction form
    209,113.08/313,493.38 = 90,695.28/x
  3. Step 3: Cross multiply
    209,113.08x = 313,493.38 × 90,695.28
  4. Step 4: Simplify right side
    209,113.08x = 28,432,369,877.25
  5. Step 5: Solve for x
    x = 28,432,369,877.25/209,113.08
  6. Step 6: Final answer
    x = 135,966.48

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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.