Home / 161,915.35-223,504.68-121,745.74

Finding the Fourth Proportional to 161,915.35, 223,504.68 and 121,745.74

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Solution

The fourth proportional to 161,915.35, 223,504.68 and 121,745.74 is: 168,055.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,915.35 : 223,504.68 = 121,745.74 : x
  2. Step 2: Convert to fraction form
    161,915.35/223,504.68 = 121,745.74/x
  3. Step 3: Cross multiply
    161,915.35x = 223,504.68 × 121,745.74
  4. Step 4: Simplify right side
    161,915.35x = 27,210,742,660.06
  5. Step 5: Solve for x
    x = 27,210,742,660.06/161,915.35
  6. Step 6: Final answer
    x = 168,055.36

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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.