Home / 113,928.12-157,210.20-66,180.78

Finding the Fourth Proportional to 113,928.12, 157,210.20 and 66,180.78

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Solution

The fourth proportional to 113,928.12, 157,210.20 and 66,180.78 is: 91,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,928.12 : 157,210.20 = 66,180.78 : x
  2. Step 2: Convert to fraction form
    113,928.12/157,210.20 = 66,180.78/x
  3. Step 3: Cross multiply
    113,928.12x = 157,210.20 × 66,180.78
  4. Step 4: Simplify right side
    113,928.12x = 10,404,293,659.96
  5. Step 5: Solve for x
    x = 10,404,293,659.96/113,928.12
  6. Step 6: Final answer
    x = 91,323.32

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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.