Home / 97,790.40-146,728.80-45,172.80

Finding the Fourth Proportional to 97,790.40, 146,728.80 and 45,172.80

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Solution

The fourth proportional to 97,790.40, 146,728.80 and 45,172.80 is: 67,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,790.40 : 146,728.80 = 45,172.80 : x
  2. Step 2: Convert to fraction form
    97,790.40/146,728.80 = 45,172.80/x
  3. Step 3: Cross multiply
    97,790.40x = 146,728.80 × 45,172.80
  4. Step 4: Simplify right side
    97,790.40x = 6,628,150,736.64
  5. Step 5: Solve for x
    x = 6,628,150,736.64/97,790.40
  6. Step 6: Final answer
    x = 67,779.16

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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.