Home / 129,627.30-178,968.24-105,810.60

Finding the Fourth Proportional to 129,627.30, 178,968.24 and 105,810.60

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Solution

The fourth proportional to 129,627.30, 178,968.24 and 105,810.60 is: 146,086.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,627.30 : 178,968.24 = 105,810.60 : x
  2. Step 2: Convert to fraction form
    129,627.30/178,968.24 = 105,810.60/x
  3. Step 3: Cross multiply
    129,627.30x = 178,968.24 × 105,810.60
  4. Step 4: Simplify right side
    129,627.30x = 18,936,736,855.34
  5. Step 5: Solve for x
    x = 18,936,736,855.34/129,627.30
  6. Step 6: Final answer
    x = 146,086.02

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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.