Home / 123,387.12-170,274.54-66,798.60

Finding the Fourth Proportional to 123,387.12, 170,274.54 and 66,798.60

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Solution

The fourth proportional to 123,387.12, 170,274.54 and 66,798.60 is: 92,182.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,387.12 : 170,274.54 = 66,798.60 : x
  2. Step 2: Convert to fraction form
    123,387.12/170,274.54 = 66,798.60/x
  3. Step 3: Cross multiply
    123,387.12x = 170,274.54 × 66,798.60
  4. Step 4: Simplify right side
    123,387.12x = 11,374,100,887.64
  5. Step 5: Solve for x
    x = 11,374,100,887.64/123,387.12
  6. Step 6: Final answer
    x = 92,182.24

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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.