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Finding the Fourth Proportional to 136,240.88, 187,905.91 and 88,509.61

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Solution

The fourth proportional to 136,240.88, 187,905.91 and 88,509.61 is: 122,074.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,240.88 : 187,905.91 = 88,509.61 : x
  2. Step 2: Convert to fraction form
    136,240.88/187,905.91 = 88,509.61/x
  3. Step 3: Cross multiply
    136,240.88x = 187,905.91 × 88,509.61
  4. Step 4: Simplify right side
    136,240.88x = 16,631,477,428.72
  5. Step 5: Solve for x
    x = 16,631,477,428.72/136,240.88
  6. Step 6: Final answer
    x = 122,074.06

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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.