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Finding the Fourth Proportional to 121,223.70, 181,749.15 and 46,314.90

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Solution

The fourth proportional to 121,223.70, 181,749.15 and 46,314.90 is: 69,439.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,223.70 : 181,749.15 = 46,314.90 : x
  2. Step 2: Convert to fraction form
    121,223.70/181,749.15 = 46,314.90/x
  3. Step 3: Cross multiply
    121,223.70x = 181,749.15 × 46,314.90
  4. Step 4: Simplify right side
    121,223.70x = 8,417,693,707.34
  5. Step 5: Solve for x
    x = 8,417,693,707.34/121,223.70
  6. Step 6: Final answer
    x = 69,439.34

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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.