Home / 115,916.40-173,831.40-80,751.60

Finding the Fourth Proportional to 115,916.40, 173,831.40 and 80,751.60

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Solution

The fourth proportional to 115,916.40, 173,831.40 and 80,751.60 is: 121,097.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,916.40 : 173,831.40 = 80,751.60 : x
  2. Step 2: Convert to fraction form
    115,916.40/173,831.40 = 80,751.60/x
  3. Step 3: Cross multiply
    115,916.40x = 173,831.40 × 80,751.60
  4. Step 4: Simplify right side
    115,916.40x = 14,037,163,680.24
  5. Step 5: Solve for x
    x = 14,037,163,680.24/115,916.40
  6. Step 6: Final answer
    x = 121,097.31

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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.