Home / 209,049.03-288,607.32-137,636.64

Finding the Fourth Proportional to 209,049.03, 288,607.32 and 137,636.64

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Solution

The fourth proportional to 209,049.03, 288,607.32 and 137,636.64 is: 190,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,049.03 : 288,607.32 = 137,636.64 : x
  2. Step 2: Convert to fraction form
    209,049.03/288,607.32 = 137,636.64/x
  3. Step 3: Cross multiply
    209,049.03x = 288,607.32 × 137,636.64
  4. Step 4: Simplify right side
    209,049.03x = 39,722,941,804.20
  5. Step 5: Solve for x
    x = 39,722,941,804.20/209,049.03
  6. Step 6: Final answer
    x = 190,017.35

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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.