Home / 205,022.80-307,534.20-125,880.40

Finding the Fourth Proportional to 205,022.80, 307,534.20 and 125,880.40

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Solution

The fourth proportional to 205,022.80, 307,534.20 and 125,880.40 is: 188,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,022.80 : 307,534.20 = 125,880.40 : x
  2. Step 2: Convert to fraction form
    205,022.80/307,534.20 = 125,880.40/x
  3. Step 3: Cross multiply
    205,022.80x = 307,534.20 × 125,880.40
  4. Step 4: Simplify right side
    205,022.80x = 38,712,528,109.68
  5. Step 5: Solve for x
    x = 38,712,528,109.68/205,022.80
  6. Step 6: Final answer
    x = 188,820.60

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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.