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Finding the Fourth Proportional to 146,080, 201,590.76 and 79,012

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Solution

The fourth proportional to 146,080, 201,590.76 and 79,012 is: 109,036.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,080 : 201,590.76 = 79,012 : x
  2. Step 2: Convert to fraction form
    146,080/201,590.76 = 79,012/x
  3. Step 3: Cross multiply
    146,080x = 201,590.76 × 79,012
  4. Step 4: Simplify right side
    146,080x = 15,928,089,129.12
  5. Step 5: Solve for x
    x = 15,928,089,129.12/146,080
  6. Step 6: Final answer
    x = 109,036.75

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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.