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Finding the Fourth Proportional to 108,804.60, 150,140.52 and 66,354.84

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Solution

The fourth proportional to 108,804.60, 150,140.52 and 66,354.84 is: 91,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,804.60 : 150,140.52 = 66,354.84 : x
  2. Step 2: Convert to fraction form
    108,804.60/150,140.52 = 66,354.84/x
  3. Step 3: Cross multiply
    108,804.60x = 150,140.52 × 66,354.84
  4. Step 4: Simplify right side
    108,804.60x = 9,962,550,182.12
  5. Step 5: Solve for x
    x = 9,962,550,182.12/108,804.60
  6. Step 6: Final answer
    x = 91,563.69

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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.