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Finding the Fourth Proportional to 121,238.70, 181,858.01 and 38,132.70

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Solution

The fourth proportional to 121,238.70, 181,858.01 and 38,132.70 is: 57,199.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,238.70 : 181,858.01 = 38,132.70 : x
  2. Step 2: Convert to fraction form
    121,238.70/181,858.01 = 38,132.70/x
  3. Step 3: Cross multiply
    121,238.70x = 181,858.01 × 38,132.70
  4. Step 4: Simplify right side
    121,238.70x = 6,934,736,747.26
  5. Step 5: Solve for x
    x = 6,934,736,747.26/121,238.70
  6. Step 6: Final answer
    x = 57,199.04

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1.5x scale

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.