Home / 113,903.58-157,160.34-66,128.16

Finding the Fourth Proportional to 113,903.58, 157,160.34 and 66,128.16

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Solution

The fourth proportional to 113,903.58, 157,160.34 and 66,128.16 is: 91,241.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,903.58 : 157,160.34 = 66,128.16 : x
  2. Step 2: Convert to fraction form
    113,903.58/157,160.34 = 66,128.16/x
  3. Step 3: Cross multiply
    113,903.58x = 157,160.34 × 66,128.16
  4. Step 4: Simplify right side
    113,903.58x = 10,392,724,109.17
  5. Step 5: Solve for x
    x = 10,392,724,109.17/113,903.58
  6. Step 6: Final answer
    x = 91,241.42

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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.