Home / 215,047,080.80-322,570,621.20-78,687,144.80

Finding the Fourth Proportional to 215,047,080.80, 322,570,621.20 and 78,687,144.80

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Solution

The fourth proportional to 215,047,080.80, 322,570,621.20 and 78,687,144.80 is: 118,030,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,047,080.80 : 322,570,621.20 = 78,687,144.80 : x
  2. Step 2: Convert to fraction form
    215,047,080.80/322,570,621.20 = 78,687,144.80/x
  3. Step 3: Cross multiply
    215,047,080.80x = 322,570,621.20 × 78,687,144.80
  4. Step 4: Simplify right side
    215,047,080.80x = 25,382,161,178,590,348
  5. Step 5: Solve for x
    x = 25,382,161,178,590,348/215,047,080.80
  6. Step 6: Final answer
    x = 118,030,717.20

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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.