Home / 118,998.07-178,254.10-66,435.55

Finding the Fourth Proportional to 118,998.07, 178,254.10 and 66,435.55

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Solution

The fourth proportional to 118,998.07, 178,254.10 and 66,435.55 is: 99,517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,998.07 : 178,254.10 = 66,435.55 : x
  2. Step 2: Convert to fraction form
    118,998.07/178,254.10 = 66,435.55/x
  3. Step 3: Cross multiply
    118,998.07x = 178,254.10 × 66,435.55
  4. Step 4: Simplify right side
    118,998.07x = 11,842,409,173.26
  5. Step 5: Solve for x
    x = 11,842,409,173.26/118,998.07
  6. Step 6: Final answer
    x = 99,517.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.