Home / 123,090.25-169,864.68-66,501.76

Finding the Fourth Proportional to 123,090.25, 169,864.68 and 66,501.76

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Solution

The fourth proportional to 123,090.25, 169,864.68 and 66,501.76 is: 91,772.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,090.25 : 169,864.68 = 66,501.76 : x
  2. Step 2: Convert to fraction form
    123,090.25/169,864.68 = 66,501.76/x
  3. Step 3: Cross multiply
    123,090.25x = 169,864.68 × 66,501.76
  4. Step 4: Simplify right side
    123,090.25x = 11,296,300,181.84
  5. Step 5: Solve for x
    x = 11,296,300,181.84/123,090.25
  6. Step 6: Final answer
    x = 91,772.50

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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.