Home / 153,168.12-211,369.74-86,099.64

Finding the Fourth Proportional to 153,168.12, 211,369.74 and 86,099.64

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Solution

The fourth proportional to 153,168.12, 211,369.74 and 86,099.64 is: 118,816.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,168.12 : 211,369.74 = 86,099.64 : x
  2. Step 2: Convert to fraction form
    153,168.12/211,369.74 = 86,099.64/x
  3. Step 3: Cross multiply
    153,168.12x = 211,369.74 × 86,099.64
  4. Step 4: Simplify right side
    153,168.12x = 18,198,858,520.89
  5. Step 5: Solve for x
    x = 18,198,858,520.89/153,168.12
  6. Step 6: Final answer
    x = 118,816.23

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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.