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Finding the Fourth Proportional to 181,145.64, 249,988.79 and 100,573.17

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Solution

The fourth proportional to 181,145.64, 249,988.79 and 100,573.17 is: 138,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,145.64 : 249,988.79 = 100,573.17 : x
  2. Step 2: Convert to fraction form
    181,145.64/249,988.79 = 100,573.17/x
  3. Step 3: Cross multiply
    181,145.64x = 249,988.79 × 100,573.17
  4. Step 4: Simplify right side
    181,145.64x = 25,142,163,634.44
  5. Step 5: Solve for x
    x = 25,142,163,634.44/181,145.64
  6. Step 6: Final answer
    x = 138,795.30

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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.