Home / 154,612.14-213,316.26-86,619.90

Finding the Fourth Proportional to 154,612.14, 213,316.26 and 86,619.90

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Solution

The fourth proportional to 154,612.14, 213,316.26 and 86,619.90 is: 119,508.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,612.14 : 213,316.26 = 86,619.90 : x
  2. Step 2: Convert to fraction form
    154,612.14/213,316.26 = 86,619.90/x
  3. Step 3: Cross multiply
    154,612.14x = 213,316.26 × 86,619.90
  4. Step 4: Simplify right side
    154,612.14x = 18,477,433,109.57
  5. Step 5: Solve for x
    x = 18,477,433,109.57/154,612.14
  6. Step 6: Final answer
    x = 119,508.29

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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.