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Finding the Fourth Proportional to 111,222.60, 153,487.20 and 60,921.60

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Solution

The fourth proportional to 111,222.60, 153,487.20 and 60,921.60 is: 84,071.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,222.60 : 153,487.20 = 60,921.60 : x
  2. Step 2: Convert to fraction form
    111,222.60/153,487.20 = 60,921.60/x
  3. Step 3: Cross multiply
    111,222.60x = 153,487.20 × 60,921.60
  4. Step 4: Simplify right side
    111,222.60x = 9,350,685,803.52
  5. Step 5: Solve for x
    x = 9,350,685,803.52/111,222.60
  6. Step 6: Final answer
    x = 84,071.81

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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.