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Finding the Fourth Proportional to 79,186.86, 118,802.16 and 70,482.60

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Solution

The fourth proportional to 79,186.86, 118,802.16 and 70,482.60 is: 105,743.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,186.86 : 118,802.16 = 70,482.60 : x
  2. Step 2: Convert to fraction form
    79,186.86/118,802.16 = 70,482.60/x
  3. Step 3: Cross multiply
    79,186.86x = 118,802.16 × 70,482.60
  4. Step 4: Simplify right side
    79,186.86x = 8,373,485,122.42
  5. Step 5: Solve for x
    x = 8,373,485,122.42/79,186.86
  6. Step 6: Final answer
    x = 105,743.37

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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.