Home / 136,807,220.81-188,807,467.44-78,078,672.35

Finding the Fourth Proportional to 136,807,220.81, 188,807,467.44 and 78,078,672.35

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Solution

The fourth proportional to 136,807,220.81, 188,807,467.44 and 78,078,672.35 is: 107,756,274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,807,220.81 : 188,807,467.44 = 78,078,672.35 : x
  2. Step 2: Convert to fraction form
    136,807,220.81/188,807,467.44 = 78,078,672.35/x
  3. Step 3: Cross multiply
    136,807,220.81x = 188,807,467.44 × 78,078,672.35
  4. Step 4: Simplify right side
    136,807,220.81x = 14,741,836,386,146,622
  5. Step 5: Solve for x
    x = 14,741,836,386,146,622/136,807,220.81
  6. Step 6: Final answer
    x = 107,756,274.12

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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.