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Finding the Fourth Proportional to 153,992.89, 230,986.60 and 79,069.01

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Solution

The fourth proportional to 153,992.89, 230,986.60 and 79,069.01 is: 118,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,992.89 : 230,986.60 = 79,069.01 : x
  2. Step 2: Convert to fraction form
    153,992.89/230,986.60 = 79,069.01/x
  3. Step 3: Cross multiply
    153,992.89x = 230,986.60 × 79,069.01
  4. Step 4: Simplify right side
    153,992.89x = 18,263,880,432.66
  5. Step 5: Solve for x
    x = 18,263,880,432.66/153,992.89
  6. Step 6: Final answer
    x = 118,602.10

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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.