Home / 84,185,608-115,332,353.03-81,038,137.43

Finding the Fourth Proportional to 84,185,608, 115,332,353.03 and 81,038,137.43

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Solution

The fourth proportional to 84,185,608, 115,332,353.03 and 81,038,137.43 is: 111,020,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,185,608 : 115,332,353.03 = 81,038,137.43 : x
  2. Step 2: Convert to fraction form
    84,185,608/115,332,353.03 = 81,038,137.43/x
  3. Step 3: Cross multiply
    84,185,608x = 115,332,353.03 × 81,038,137.43
  4. Step 4: Simplify right side
    84,185,608x = 9,346,319,074,970,418
  5. Step 5: Solve for x
    x = 9,346,319,074,970,418/84,185,608
  6. Step 6: Final answer
    x = 111,020,390.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.