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Finding the Fourth Proportional to 126,605, 174,699.78 and 70,008.68

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Solution

The fourth proportional to 126,605, 174,699.78 and 70,008.68 is: 96,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,605 : 174,699.78 = 70,008.68 : x
  2. Step 2: Convert to fraction form
    126,605/174,699.78 = 70,008.68/x
  3. Step 3: Cross multiply
    126,605x = 174,699.78 × 70,008.68
  4. Step 4: Simplify right side
    126,605x = 12,230,500,994.09
  5. Step 5: Solve for x
    x = 12,230,500,994.09/126,605
  6. Step 6: Final answer
    x = 96,603.62

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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.