Home / 209,025.80-288,501.62-137,412.48

Finding the Fourth Proportional to 209,025.80, 288,501.62 and 137,412.48

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Solution

The fourth proportional to 209,025.80, 288,501.62 and 137,412.48 is: 189,659.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,025.80 : 288,501.62 = 137,412.48 : x
  2. Step 2: Convert to fraction form
    209,025.80/288,501.62 = 137,412.48/x
  3. Step 3: Cross multiply
    209,025.80x = 288,501.62 × 137,412.48
  4. Step 4: Simplify right side
    209,025.80x = 39,643,722,401.16
  5. Step 5: Solve for x
    x = 39,643,722,401.16/209,025.80
  6. Step 6: Final answer
    x = 189,659.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.