Home / 209,229.04-313,666.56-90,811.36

Finding the Fourth Proportional to 209,229.04, 313,666.56 and 90,811.36

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Solution

The fourth proportional to 209,229.04, 313,666.56 and 90,811.36 is: 136,140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,229.04 : 313,666.56 = 90,811.36 : x
  2. Step 2: Convert to fraction form
    209,229.04/313,666.56 = 90,811.36/x
  3. Step 3: Cross multiply
    209,229.04x = 313,666.56 × 90,811.36
  4. Step 4: Simplify right side
    209,229.04x = 28,484,486,900.12
  5. Step 5: Solve for x
    x = 28,484,486,900.12/209,229.04
  6. Step 6: Final answer
    x = 136,140.22

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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.