Home / 154,498.19-213,219.14-86,511.65

Finding the Fourth Proportional to 154,498.19, 213,219.14 and 86,511.65

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Solution

The fourth proportional to 154,498.19, 213,219.14 and 86,511.65 is: 119,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,498.19 : 213,219.14 = 86,511.65 : x
  2. Step 2: Convert to fraction form
    154,498.19/213,219.14 = 86,511.65/x
  3. Step 3: Cross multiply
    154,498.19x = 213,219.14 × 86,511.65
  4. Step 4: Simplify right side
    154,498.19x = 18,445,938,114.33
  5. Step 5: Solve for x
    x = 18,445,938,114.33/154,498.19
  6. Step 6: Final answer
    x = 119,392.59

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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.