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Finding the Fourth Proportional to 115,276.37, 172,554.73 and 84,915.73

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Solution

The fourth proportional to 115,276.37, 172,554.73 and 84,915.73 is: 127,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,276.37 : 172,554.73 = 84,915.73 : x
  2. Step 2: Convert to fraction form
    115,276.37/172,554.73 = 84,915.73/x
  3. Step 3: Cross multiply
    115,276.37x = 172,554.73 × 84,915.73
  4. Step 4: Simplify right side
    115,276.37x = 14,652,610,862.90
  5. Step 5: Solve for x
    x = 14,652,610,862.90/115,276.37
  6. Step 6: Final answer
    x = 127,108.54

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1.5x scale

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.