Home / 115,565.20-173,405.40-65,683.60

Finding the Fourth Proportional to 115,565.20, 173,405.40 and 65,683.60

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Solution

The fourth proportional to 115,565.20, 173,405.40 and 65,683.60 is: 98,558.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,565.20 : 173,405.40 = 65,683.60 : x
  2. Step 2: Convert to fraction form
    115,565.20/173,405.40 = 65,683.60/x
  3. Step 3: Cross multiply
    115,565.20x = 173,405.40 × 65,683.60
  4. Step 4: Simplify right side
    115,565.20x = 11,389,890,931.44
  5. Step 5: Solve for x
    x = 11,389,890,931.44/115,565.20
  6. Step 6: Final answer
    x = 98,558.14

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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.