Home / 205,820.64-309,247.74-130,973.40

Finding the Fourth Proportional to 205,820.64, 309,247.74 and 130,973.40

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Solution

The fourth proportional to 205,820.64, 309,247.74 and 130,973.40 is: 196,788.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,820.64 : 309,247.74 = 130,973.40 : x
  2. Step 2: Convert to fraction form
    205,820.64/309,247.74 = 130,973.40/x
  3. Step 3: Cross multiply
    205,820.64x = 309,247.74 × 130,973.40
  4. Step 4: Simplify right side
    205,820.64x = 40,503,227,950.12
  5. Step 5: Solve for x
    x = 40,503,227,950.12/205,820.64
  6. Step 6: Final answer
    x = 196,788.95

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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.