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Finding the Fourth Proportional to 100,127.99, 138,176.61 and 54,806.06

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Solution

The fourth proportional to 100,127.99, 138,176.61 and 54,806.06 is: 75,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,127.99 : 138,176.61 = 54,806.06 : x
  2. Step 2: Convert to fraction form
    100,127.99/138,176.61 = 54,806.06/x
  3. Step 3: Cross multiply
    100,127.99x = 138,176.61 × 54,806.06
  4. Step 4: Simplify right side
    100,127.99x = 7,572,915,578.26
  5. Step 5: Solve for x
    x = 7,572,915,578.26/100,127.99
  6. Step 6: Final answer
    x = 75,632.35

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1.5x scale

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.