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Finding the Fourth Proportional to 108,782.61, 150,122.58 and 61,039.49

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Solution

The fourth proportional to 108,782.61, 150,122.58 and 61,039.49 is: 84,235.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,782.61 : 150,122.58 = 61,039.49 : x
  2. Step 2: Convert to fraction form
    108,782.61/150,122.58 = 61,039.49/x
  3. Step 3: Cross multiply
    108,782.61x = 150,122.58 × 61,039.49
  4. Step 4: Simplify right side
    108,782.61x = 9,163,405,480.45
  5. Step 5: Solve for x
    x = 9,163,405,480.45/108,782.61
  6. Step 6: Final answer
    x = 84,235.94

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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.