Home / 205,204.20-307,316.70-99,684.20

Finding the Fourth Proportional to 205,204.20, 307,316.70 and 99,684.20

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Solution

The fourth proportional to 205,204.20, 307,316.70 and 99,684.20 is: 149,288.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,204.20 : 307,316.70 = 99,684.20 : x
  2. Step 2: Convert to fraction form
    205,204.20/307,316.70 = 99,684.20/x
  3. Step 3: Cross multiply
    205,204.20x = 307,316.70 × 99,684.20
  4. Step 4: Simplify right side
    205,204.20x = 30,634,619,386.14
  5. Step 5: Solve for x
    x = 30,634,619,386.14/205,204.20
  6. Step 6: Final answer
    x = 149,288.46

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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.