Home / 102,002.40-153,003.60-91,288.80

Finding the Fourth Proportional to 102,002.40, 153,003.60 and 91,288.80

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Solution

The fourth proportional to 102,002.40, 153,003.60 and 91,288.80 is: 136,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,002.40 : 153,003.60 = 91,288.80 : x
  2. Step 2: Convert to fraction form
    102,002.40/153,003.60 = 91,288.80/x
  3. Step 3: Cross multiply
    102,002.40x = 153,003.60 × 91,288.80
  4. Step 4: Simplify right side
    102,002.40x = 13,967,515,039.68
  5. Step 5: Solve for x
    x = 13,967,515,039.68/102,002.40
  6. Step 6: Final answer
    x = 136,933.20

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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.