Home / 123,287.28-170,136.84-66,699.12

Finding the Fourth Proportional to 123,287.28, 170,136.84 and 66,699.12

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Solution

The fourth proportional to 123,287.28, 170,136.84 and 66,699.12 is: 92,045.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,287.28 : 170,136.84 = 66,699.12 : x
  2. Step 2: Convert to fraction form
    123,287.28/170,136.84 = 66,699.12/x
  3. Step 3: Cross multiply
    123,287.28x = 170,136.84 × 66,699.12
  4. Step 4: Simplify right side
    123,287.28x = 11,347,977,507.58
  5. Step 5: Solve for x
    x = 11,347,977,507.58/123,287.28
  6. Step 6: Final answer
    x = 92,045.00

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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.