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Finding the Fourth Proportional to 121,028.40, 181,477.80 and 50,828.40

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Solution

The fourth proportional to 121,028.40, 181,477.80 and 50,828.40 is: 76,215.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,028.40 : 181,477.80 = 50,828.40 : x
  2. Step 2: Convert to fraction form
    121,028.40/181,477.80 = 50,828.40/x
  3. Step 3: Cross multiply
    121,028.40x = 181,477.80 × 50,828.40
  4. Step 4: Simplify right side
    121,028.40x = 9,224,226,209.52
  5. Step 5: Solve for x
    x = 9,224,226,209.52/121,028.40
  6. Step 6: Final answer
    x = 76,215.39

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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.