Home / 115,919.10-173,878.65-112,638.60

Finding the Fourth Proportional to 115,919.10, 173,878.65 and 112,638.60

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Solution

The fourth proportional to 115,919.10, 173,878.65 and 112,638.60 is: 168,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,919.10 : 173,878.65 = 112,638.60 : x
  2. Step 2: Convert to fraction form
    115,919.10/173,878.65 = 112,638.60/x
  3. Step 3: Cross multiply
    115,919.10x = 173,878.65 × 112,638.60
  4. Step 4: Simplify right side
    115,919.10x = 19,585,447,705.89
  5. Step 5: Solve for x
    x = 19,585,447,705.89/115,919.10
  6. Step 6: Final answer
    x = 168,957.90

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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.