Home / 101,173.12-151,636.80-71,599.60

Finding the Fourth Proportional to 101,173.12, 151,636.80 and 71,599.60

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Solution

The fourth proportional to 101,173.12, 151,636.80 and 71,599.60 is: 107,312.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,173.12 : 151,636.80 = 71,599.60 : x
  2. Step 2: Convert to fraction form
    101,173.12/151,636.80 = 71,599.60/x
  3. Step 3: Cross multiply
    101,173.12x = 151,636.80 × 71,599.60
  4. Step 4: Simplify right side
    101,173.12x = 10,857,134,225.28
  5. Step 5: Solve for x
    x = 10,857,134,225.28/101,173.12
  6. Step 6: Final answer
    x = 107,312.44

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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.