Home / 138,328.05-190,823.76-84,519.30

Finding the Fourth Proportional to 138,328.05, 190,823.76 and 84,519.30

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Solution

The fourth proportional to 138,328.05, 190,823.76 and 84,519.30 is: 116,594.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,328.05 : 190,823.76 = 84,519.30 : x
  2. Step 2: Convert to fraction form
    138,328.05/190,823.76 = 84,519.30/x
  3. Step 3: Cross multiply
    138,328.05x = 190,823.76 × 84,519.30
  4. Step 4: Simplify right side
    138,328.05x = 16,128,290,618.57
  5. Step 5: Solve for x
    x = 16,128,290,618.57/138,328.05
  6. Step 6: Final answer
    x = 116,594.51

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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.