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Finding the Fourth Proportional to 111,220.50, 153,484.83 and 60,919.50

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Solution

The fourth proportional to 111,220.50, 153,484.83 and 60,919.50 is: 84,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,220.50 : 153,484.83 = 60,919.50 : x
  2. Step 2: Convert to fraction form
    111,220.50/153,484.83 = 60,919.50/x
  3. Step 3: Cross multiply
    111,220.50x = 153,484.83 × 60,919.50
  4. Step 4: Simplify right side
    111,220.50x = 9,350,219,101.19
  5. Step 5: Solve for x
    x = 9,350,219,101.19/111,220.50
  6. Step 6: Final answer
    x = 84,069.21

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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.