Home / 123,358.40-170,235.20-69,645.60

Finding the Fourth Proportional to 123,358.40, 170,235.20 and 69,645.60

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Solution

The fourth proportional to 123,358.40, 170,235.20 and 69,645.60 is: 96,111.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,358.40 : 170,235.20 = 69,645.60 : x
  2. Step 2: Convert to fraction form
    123,358.40/170,235.20 = 69,645.60/x
  3. Step 3: Cross multiply
    123,358.40x = 170,235.20 × 69,645.60
  4. Step 4: Simplify right side
    123,358.40x = 11,856,132,645.12
  5. Step 5: Solve for x
    x = 11,856,132,645.12/123,358.40
  6. Step 6: Final answer
    x = 96,111.27

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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.