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Finding the Fourth Proportional to 121,458.69, 167,485.81 and 104,520.37

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Solution

The fourth proportional to 121,458.69, 167,485.81 and 104,520.37 is: 144,128.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,458.69 : 167,485.81 = 104,520.37 : x
  2. Step 2: Convert to fraction form
    121,458.69/167,485.81 = 104,520.37/x
  3. Step 3: Cross multiply
    121,458.69x = 167,485.81 × 104,520.37
  4. Step 4: Simplify right side
    121,458.69x = 17,505,678,830.95
  5. Step 5: Solve for x
    x = 17,505,678,830.95/121,458.69
  6. Step 6: Final answer
    x = 144,128.66

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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.