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Finding the Fourth Proportional to 122,341.60, 183,469.20 and 43,458.40

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Solution

The fourth proportional to 122,341.60, 183,469.20 and 43,458.40 is: 65,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,341.60 : 183,469.20 = 43,458.40 : x
  2. Step 2: Convert to fraction form
    122,341.60/183,469.20 = 43,458.40/x
  3. Step 3: Cross multiply
    122,341.60x = 183,469.20 × 43,458.40
  4. Step 4: Simplify right side
    122,341.60x = 7,973,277,881.28
  5. Step 5: Solve for x
    x = 7,973,277,881.28/122,341.60
  6. Step 6: Final answer
    x = 65,172.25

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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.