Home / 98,629.20-147,943.80-70,635.60

Finding the Fourth Proportional to 98,629.20, 147,943.80 and 70,635.60

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Solution

The fourth proportional to 98,629.20, 147,943.80 and 70,635.60 is: 105,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,629.20 : 147,943.80 = 70,635.60 : x
  2. Step 2: Convert to fraction form
    98,629.20/147,943.80 = 70,635.60/x
  3. Step 3: Cross multiply
    98,629.20x = 147,943.80 × 70,635.60
  4. Step 4: Simplify right side
    98,629.20x = 10,450,099,079.28
  5. Step 5: Solve for x
    x = 10,450,099,079.28/98,629.20
  6. Step 6: Final answer
    x = 105,953.40

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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.