Home / 209,983.80-314,975.70-121,410.30

Finding the Fourth Proportional to 209,983.80, 314,975.70 and 121,410.30

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Solution

The fourth proportional to 209,983.80, 314,975.70 and 121,410.30 is: 182,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,983.80 : 314,975.70 = 121,410.30 : x
  2. Step 2: Convert to fraction form
    209,983.80/314,975.70 = 121,410.30/x
  3. Step 3: Cross multiply
    209,983.80x = 314,975.70 × 121,410.30
  4. Step 4: Simplify right side
    209,983.80x = 38,241,294,229.71
  5. Step 5: Solve for x
    x = 38,241,294,229.71/209,983.80
  6. Step 6: Final answer
    x = 182,115.45

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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.