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Finding the Fourth Proportional to 115,154.17, 172,600.22 and 70,076.11

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Solution

The fourth proportional to 115,154.17, 172,600.22 and 70,076.11 is: 105,034.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,154.17 : 172,600.22 = 70,076.11 : x
  2. Step 2: Convert to fraction form
    115,154.17/172,600.22 = 70,076.11/x
  3. Step 3: Cross multiply
    115,154.17x = 172,600.22 × 70,076.11
  4. Step 4: Simplify right side
    115,154.17x = 12,095,152,002.74
  5. Step 5: Solve for x
    x = 12,095,152,002.74/115,154.17
  6. Step 6: Final answer
    x = 105,034.42

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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.