Home / 209,222.50-313,656.85-90,804.82

Finding the Fourth Proportional to 209,222.50, 313,656.85 and 90,804.82

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Solution

The fourth proportional to 209,222.50, 313,656.85 and 90,804.82 is: 136,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,222.50 : 313,656.85 = 90,804.82 : x
  2. Step 2: Convert to fraction form
    209,222.50/313,656.85 = 90,804.82/x
  3. Step 3: Cross multiply
    209,222.50x = 313,656.85 × 90,804.82
  4. Step 4: Simplify right side
    209,222.50x = 28,481,553,806.02
  5. Step 5: Solve for x
    x = 28,481,553,806.02/209,222.50
  6. Step 6: Final answer
    x = 136,130.45

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1.5x scale

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.