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Finding the Fourth Proportional to 170,052.20, 254,859.60 and 103,421.60

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Solution

The fourth proportional to 170,052.20, 254,859.60 and 103,421.60 is: 154,999.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,052.20 : 254,859.60 = 103,421.60 : x
  2. Step 2: Convert to fraction form
    170,052.20/254,859.60 = 103,421.60/x
  3. Step 3: Cross multiply
    170,052.20x = 254,859.60 × 103,421.60
  4. Step 4: Simplify right side
    170,052.20x = 26,357,987,607.36
  5. Step 5: Solve for x
    x = 26,357,987,607.36/170,052.20
  6. Step 6: Final answer
    x = 154,999.39

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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.