Home / 209,810.80-289,540.20-124,931.44

Finding the Fourth Proportional to 209,810.80, 289,540.20 and 124,931.44

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Solution

The fourth proportional to 209,810.80, 289,540.20 and 124,931.44 is: 172,406.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,810.80 : 289,540.20 = 124,931.44 : x
  2. Step 2: Convert to fraction form
    209,810.80/289,540.20 = 124,931.44/x
  3. Step 3: Cross multiply
    209,810.80x = 289,540.20 × 124,931.44
  4. Step 4: Simplify right side
    209,810.80x = 36,172,674,123.89
  5. Step 5: Solve for x
    x = 36,172,674,123.89/209,810.80
  6. Step 6: Final answer
    x = 172,406.16

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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.