Home / 128,265.19-177,055.46-114,812.71

Finding the Fourth Proportional to 128,265.19, 177,055.46 and 114,812.71

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Solution

The fourth proportional to 128,265.19, 177,055.46 and 114,812.71 is: 158,485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,265.19 : 177,055.46 = 114,812.71 : x
  2. Step 2: Convert to fraction form
    128,265.19/177,055.46 = 114,812.71/x
  3. Step 3: Cross multiply
    128,265.19x = 177,055.46 × 114,812.71
  4. Step 4: Simplify right side
    128,265.19x = 20,328,216,608.83
  5. Step 5: Solve for x
    x = 20,328,216,608.83/128,265.19
  6. Step 6: Final answer
    x = 158,485.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.