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Finding the Fourth Proportional to 121,141, 181,718.79 and 38,035

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Solution

The fourth proportional to 121,141, 181,718.79 and 38,035 is: 57,054.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,141 : 181,718.79 = 38,035 : x
  2. Step 2: Convert to fraction form
    121,141/181,718.79 = 38,035/x
  3. Step 3: Cross multiply
    121,141x = 181,718.79 × 38,035
  4. Step 4: Simplify right side
    121,141x = 6,911,674,177.65
  5. Step 5: Solve for x
    x = 6,911,674,177.65/121,141
  6. Step 6: Final answer
    x = 57,054.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.