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Finding the Fourth Proportional to 108,459.90, 149,698.08 and 66,032.10

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Solution

The fourth proportional to 108,459.90, 149,698.08 and 66,032.10 is: 91,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,459.90 : 149,698.08 = 66,032.10 : x
  2. Step 2: Convert to fraction form
    108,459.90/149,698.08 = 66,032.10/x
  3. Step 3: Cross multiply
    108,459.90x = 149,698.08 × 66,032.10
  4. Step 4: Simplify right side
    108,459.90x = 9,884,878,588.37
  5. Step 5: Solve for x
    x = 9,884,878,588.37/108,459.90
  6. Step 6: Final answer
    x = 91,138.56

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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.