Home / 209,127,091.79-288,593,791.55-115,039,213.45

Finding the Fourth Proportional to 209,127,091.79, 288,593,791.55 and 115,039,213.45

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Solution

The fourth proportional to 209,127,091.79, 288,593,791.55 and 115,039,213.45 is: 158,753,237.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,127,091.79 : 288,593,791.55 = 115,039,213.45 : x
  2. Step 2: Convert to fraction form
    209,127,091.79/288,593,791.55 = 115,039,213.45/x
  3. Step 3: Cross multiply
    209,127,091.79x = 288,593,791.55 × 115,039,213.45
  4. Step 4: Simplify right side
    209,127,091.79x = 33,199,602,786,465,260
  5. Step 5: Solve for x
    x = 33,199,602,786,465,260/209,127,091.79
  6. Step 6: Final answer
    x = 158,753,237.10

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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.