Home / 78,874,185.97-118,311,120.30-74,074,444.20

Finding the Fourth Proportional to 78,874,185.97, 118,311,120.30 and 74,074,444.20

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Solution

The fourth proportional to 78,874,185.97, 118,311,120.30 and 74,074,444.20 is: 111,111,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,874,185.97 : 118,311,120.30 = 74,074,444.20 : x
  2. Step 2: Convert to fraction form
    78,874,185.97/118,311,120.30 = 74,074,444.20/x
  3. Step 3: Cross multiply
    78,874,185.97x = 118,311,120.30 × 74,074,444.20
  4. Step 4: Simplify right side
    78,874,185.97x = 8,763,830,478,901,837
  5. Step 5: Solve for x
    x = 8,763,830,478,901,837/78,874,185.97
  6. Step 6: Final answer
    x = 111,111,517.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.