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Finding the Fourth Proportional to 129,615.30, 181,986.30 and 129,615.30

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Solution

The fourth proportional to 129,615.30, 181,986.30 and 129,615.30 is: 181,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,615.30 : 181,986.30 = 129,615.30 : x
  2. Step 2: Convert to fraction form
    129,615.30/181,986.30 = 129,615.30/x
  3. Step 3: Cross multiply
    129,615.30x = 181,986.30 × 129,615.30
  4. Step 4: Simplify right side
    129,615.30x = 23,588,208,870.39
  5. Step 5: Solve for x
    x = 23,588,208,870.39/129,615.30
  6. Step 6: Final answer
    x = 181,986.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.