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Finding the Fourth Proportional to 121,338.40, 181,934.70 and 62,289.40

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Solution

The fourth proportional to 121,338.40, 181,934.70 and 62,289.40 is: 93,396.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,338.40 : 181,934.70 = 62,289.40 : x
  2. Step 2: Convert to fraction form
    121,338.40/181,934.70 = 62,289.40/x
  3. Step 3: Cross multiply
    121,338.40x = 181,934.70 × 62,289.40
  4. Step 4: Simplify right side
    121,338.40x = 11,332,603,302.18
  5. Step 5: Solve for x
    x = 11,332,603,302.18/121,338.40
  6. Step 6: Final answer
    x = 93,396.68

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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.