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Finding the Fourth Proportional to 121,187.60, 167,195.60 and 70,172.48

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Solution

The fourth proportional to 121,187.60, 167,195.60 and 70,172.48 is: 96,812.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,187.60 : 167,195.60 = 70,172.48 : x
  2. Step 2: Convert to fraction form
    121,187.60/167,195.60 = 70,172.48/x
  3. Step 3: Cross multiply
    121,187.60x = 167,195.60 × 70,172.48
  4. Step 4: Simplify right side
    121,187.60x = 11,732,529,897.09
  5. Step 5: Solve for x
    x = 11,732,529,897.09/121,187.60
  6. Step 6: Final answer
    x = 96,812.96

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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.