Home / 115,921.10-173,881.65-112,640.60

Finding the Fourth Proportional to 115,921.10, 173,881.65 and 112,640.60

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Solution

The fourth proportional to 115,921.10, 173,881.65 and 112,640.60 is: 168,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,921.10 : 173,881.65 = 112,640.60 : x
  2. Step 2: Convert to fraction form
    115,921.10/173,881.65 = 112,640.60/x
  3. Step 3: Cross multiply
    115,921.10x = 173,881.65 × 112,640.60
  4. Step 4: Simplify right side
    115,921.10x = 19,586,133,384.99
  5. Step 5: Solve for x
    x = 19,586,133,384.99/115,921.10
  6. Step 6: Final answer
    x = 168,960.90

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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.