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Finding the Fourth Proportional to 108,818.88, 150,193.92 and 66,368.64

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Solution

The fourth proportional to 108,818.88, 150,193.92 and 66,368.64 is: 91,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,818.88 : 150,193.92 = 66,368.64 : x
  2. Step 2: Convert to fraction form
    108,818.88/150,193.92 = 66,368.64/x
  3. Step 3: Cross multiply
    108,818.88x = 150,193.92 × 66,368.64
  4. Step 4: Simplify right side
    108,818.88x = 9,968,166,206.67
  5. Step 5: Solve for x
    x = 9,968,166,206.67/108,818.88
  6. Step 6: Final answer
    x = 91,603.28

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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.