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Finding the Fourth Proportional to 115,100.70, 172,661.18 and 35,156.72

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Solution

The fourth proportional to 115,100.70, 172,661.18 and 35,156.72 is: 52,738.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,100.70 : 172,661.18 = 35,156.72 : x
  2. Step 2: Convert to fraction form
    115,100.70/172,661.18 = 35,156.72/x
  3. Step 3: Cross multiply
    115,100.70x = 172,661.18 × 35,156.72
  4. Step 4: Simplify right side
    115,100.70x = 6,070,199,721.04
  5. Step 5: Solve for x
    x = 6,070,199,721.04/115,100.70
  6. Step 6: Final answer
    x = 52,738.17

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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.