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Finding the Fourth Proportional to 129,034.40, 193,580.40 and 101,040.80

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Solution

The fourth proportional to 129,034.40, 193,580.40 and 101,040.80 is: 151,583.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,034.40 : 193,580.40 = 101,040.80 : x
  2. Step 2: Convert to fraction form
    129,034.40/193,580.40 = 101,040.80/x
  3. Step 3: Cross multiply
    129,034.40x = 193,580.40 × 101,040.80
  4. Step 4: Simplify right side
    129,034.40x = 19,559,518,480.32
  5. Step 5: Solve for x
    x = 19,559,518,480.32/129,034.40
  6. Step 6: Final answer
    x = 151,583.75

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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.