Home / 121,940,812.99-168,273,815.89-66,185,036.30

Finding the Fourth Proportional to 121,940,812.99, 168,273,815.89 and 66,185,036.30

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Solution

The fourth proportional to 121,940,812.99, 168,273,815.89 and 66,185,036.30 is: 91,332,904.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,940,812.99 : 168,273,815.89 = 66,185,036.30 : x
  2. Step 2: Convert to fraction form
    121,940,812.99/168,273,815.89 = 66,185,036.30/x
  3. Step 3: Cross multiply
    121,940,812.99x = 168,273,815.89 × 66,185,036.30
  4. Step 4: Simplify right side
    121,940,812.99x = 11,137,208,613,019,166
  5. Step 5: Solve for x
    x = 11,137,208,613,019,166/121,940,812.99
  6. Step 6: Final answer
    x = 91,332,904.38

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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.