Home / 155,945,405.82-215,196,133.95-85,367,362.62

Finding the Fourth Proportional to 155,945,405.82, 215,196,133.95 and 85,367,362.62

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Solution

The fourth proportional to 155,945,405.82, 215,196,133.95 and 85,367,362.62 is: 117,802,293.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,945,405.82 : 215,196,133.95 = 85,367,362.62 : x
  2. Step 2: Convert to fraction form
    155,945,405.82/215,196,133.95 = 85,367,362.62/x
  3. Step 3: Cross multiply
    155,945,405.82x = 215,196,133.95 × 85,367,362.62
  4. Step 4: Simplify right side
    155,945,405.82x = 18,370,726,401,331,744
  5. Step 5: Solve for x
    x = 18,370,726,401,331,744/155,945,405.82
  6. Step 6: Final answer
    x = 117,802,293.08

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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.