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Finding the Fourth Proportional to 181,146.39, 249,989.82 and 100,573.92

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Solution

The fourth proportional to 181,146.39, 249,989.82 and 100,573.92 is: 138,796.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,146.39 : 249,989.82 = 100,573.92 : x
  2. Step 2: Convert to fraction form
    181,146.39/249,989.82 = 100,573.92/x
  3. Step 3: Cross multiply
    181,146.39x = 249,989.82 × 100,573.92
  4. Step 4: Simplify right side
    181,146.39x = 25,142,456,157.49
  5. Step 5: Solve for x
    x = 25,142,456,157.49/181,146.39
  6. Step 6: Final answer
    x = 138,796.34

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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.