Home / 206,487,054.34-309,617,371.97-81,863,434.07

Finding the Fourth Proportional to 206,487,054.34, 309,617,371.97 and 81,863,434.07

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Solution

The fourth proportional to 206,487,054.34, 309,617,371.97 and 81,863,434.07 is: 122,750,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,487,054.34 : 309,617,371.97 = 81,863,434.07 : x
  2. Step 2: Convert to fraction form
    206,487,054.34/309,617,371.97 = 81,863,434.07/x
  3. Step 3: Cross multiply
    206,487,054.34x = 309,617,371.97 × 81,863,434.07
  4. Step 4: Simplify right side
    206,487,054.34x = 25,346,341,315,235,356
  5. Step 5: Solve for x
    x = 25,346,341,315,235,356/206,487,054.34
  6. Step 6: Final answer
    x = 122,750,268.27

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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.