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Finding the Fourth Proportional to 134,528, 185,661.74 and 100,477.38

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Solution

The fourth proportional to 134,528, 185,661.74 and 100,477.38 is: 138,668.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,528 : 185,661.74 = 100,477.38 : x
  2. Step 2: Convert to fraction form
    134,528/185,661.74 = 100,477.38/x
  3. Step 3: Cross multiply
    134,528x = 185,661.74 × 100,477.38
  4. Step 4: Simplify right side
    134,528x = 18,654,805,201.44
  5. Step 5: Solve for x
    x = 18,654,805,201.44/134,528
  6. Step 6: Final answer
    x = 138,668.57

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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.