Home / 121,874,369.64-168,186,949.53-66,119,787.19

Finding the Fourth Proportional to 121,874,369.64, 168,186,949.53 and 66,119,787.19

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Solution

The fourth proportional to 121,874,369.64, 168,186,949.53 and 66,119,787.19 is: 91,245,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,874,369.64 : 168,186,949.53 = 66,119,787.19 : x
  2. Step 2: Convert to fraction form
    121,874,369.64/168,186,949.53 = 66,119,787.19/x
  3. Step 3: Cross multiply
    121,874,369.64x = 168,186,949.53 × 66,119,787.19
  4. Step 4: Simplify right side
    121,874,369.64x = 11,120,485,311,058,870
  5. Step 5: Solve for x
    x = 11,120,485,311,058,870/121,874,369.64
  6. Step 6: Final answer
    x = 91,245,479.62

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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.