Home / 136,812,544.32-188,804,367.36-78,074,040

Finding the Fourth Proportional to 136,812,544.32, 188,804,367.36 and 78,074,040

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Solution

The fourth proportional to 136,812,544.32, 188,804,367.36 and 78,074,040 is: 107,743,919.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,812,544.32 : 188,804,367.36 = 78,074,040 : x
  2. Step 2: Convert to fraction form
    136,812,544.32/188,804,367.36 = 78,074,040/x
  3. Step 3: Cross multiply
    136,812,544.32x = 188,804,367.36 × 78,074,040
  4. Step 4: Simplify right side
    136,812,544.32x = 14,740,719,729,439,336
  5. Step 5: Solve for x
    x = 14,740,719,729,439,336/136,812,544.32
  6. Step 6: Final answer
    x = 107,743,919.26

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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.