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Finding the Fourth Proportional to 181,239.99, 250,119.51 and 100,667.79

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Solution

The fourth proportional to 181,239.99, 250,119.51 and 100,667.79 is: 138,926.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,239.99 : 250,119.51 = 100,667.79 : x
  2. Step 2: Convert to fraction form
    181,239.99/250,119.51 = 100,667.79/x
  3. Step 3: Cross multiply
    181,239.99x = 250,119.51 × 100,667.79
  4. Step 4: Simplify right side
    181,239.99x = 25,178,978,307.58
  5. Step 5: Solve for x
    x = 25,178,978,307.58/181,239.99
  6. Step 6: Final answer
    x = 138,926.17

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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.