Home / 128,235.74-177,014.70-114,783.26

Finding the Fourth Proportional to 128,235.74, 177,014.70 and 114,783.26

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Solution

The fourth proportional to 128,235.74, 177,014.70 and 114,783.26 is: 158,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,235.74 : 177,014.70 = 114,783.26 : x
  2. Step 2: Convert to fraction form
    128,235.74/177,014.70 = 114,783.26/x
  3. Step 3: Cross multiply
    128,235.74x = 177,014.70 × 114,783.26
  4. Step 4: Simplify right side
    128,235.74x = 20,318,323,448.85
  5. Step 5: Solve for x
    x = 20,318,323,448.85/128,235.74
  6. Step 6: Final answer
    x = 158,445.10

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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.