Home / 111,942.60-167,913.90-86,573.40

Finding the Fourth Proportional to 111,942.60, 167,913.90 and 86,573.40

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Solution

The fourth proportional to 111,942.60, 167,913.90 and 86,573.40 is: 129,860.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,942.60 : 167,913.90 = 86,573.40 : x
  2. Step 2: Convert to fraction form
    111,942.60/167,913.90 = 86,573.40/x
  3. Step 3: Cross multiply
    111,942.60x = 167,913.90 × 86,573.40
  4. Step 4: Simplify right side
    111,942.60x = 14,536,877,230.26
  5. Step 5: Solve for x
    x = 14,536,877,230.26/111,942.60
  6. Step 6: Final answer
    x = 129,860.10

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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.