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Finding the Fourth Proportional to 108,606.63, 149,881.20 and 60,858.21

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Solution

The fourth proportional to 108,606.63, 149,881.20 and 60,858.21 is: 83,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,606.63 : 149,881.20 = 60,858.21 : x
  2. Step 2: Convert to fraction form
    108,606.63/149,881.20 = 60,858.21/x
  3. Step 3: Cross multiply
    108,606.63x = 149,881.20 × 60,858.21
  4. Step 4: Simplify right side
    108,606.63x = 9,121,501,544.65
  5. Step 5: Solve for x
    x = 9,121,501,544.65/108,606.63
  6. Step 6: Final answer
    x = 83,986.60

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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.