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Finding the Fourth Proportional to 181,107.60, 249,931.26 and 100,540.32

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Solution

The fourth proportional to 181,107.60, 249,931.26 and 100,540.32 is: 138,747.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,107.60 : 249,931.26 = 100,540.32 : x
  2. Step 2: Convert to fraction form
    181,107.60/249,931.26 = 100,540.32/x
  3. Step 3: Cross multiply
    181,107.60x = 249,931.26 × 100,540.32
  4. Step 4: Simplify right side
    181,107.60x = 25,128,168,858.40
  5. Step 5: Solve for x
    x = 25,128,168,858.40/181,107.60
  6. Step 6: Final answer
    x = 138,747.18

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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.