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Finding the Fourth Proportional to 108,460.90, 149,699.46 and 66,033.10

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Solution

The fourth proportional to 108,460.90, 149,699.46 and 66,033.10 is: 91,139.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,460.90 : 149,699.46 = 66,033.10 : x
  2. Step 2: Convert to fraction form
    108,460.90/149,699.46 = 66,033.10/x
  3. Step 3: Cross multiply
    108,460.90x = 149,699.46 × 66,033.10
  4. Step 4: Simplify right side
    108,460.90x = 9,885,119,412.13
  5. Step 5: Solve for x
    x = 9,885,119,412.13/108,460.90
  6. Step 6: Final answer
    x = 91,139.94

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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.