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Finding the Fourth Proportional to 126,804.99, 174,988.75 and 70,215.15

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Solution

The fourth proportional to 126,804.99, 174,988.75 and 70,215.15 is: 96,895.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,804.99 : 174,988.75 = 70,215.15 : x
  2. Step 2: Convert to fraction form
    126,804.99/174,988.75 = 70,215.15/x
  3. Step 3: Cross multiply
    126,804.99x = 174,988.75 × 70,215.15
  4. Step 4: Simplify right side
    126,804.99x = 12,286,861,329.56
  5. Step 5: Solve for x
    x = 12,286,861,329.56/126,804.99
  6. Step 6: Final answer
    x = 96,895.72

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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.