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Finding the Fourth Proportional to 154,853.82, 213,763.59 and 104,620.86

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Solution

The fourth proportional to 154,853.82, 213,763.59 and 104,620.86 is: 144,420.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,853.82 : 213,763.59 = 104,620.86 : x
  2. Step 2: Convert to fraction form
    154,853.82/213,763.59 = 104,620.86/x
  3. Step 3: Cross multiply
    154,853.82x = 213,763.59 × 104,620.86
  4. Step 4: Simplify right side
    154,853.82x = 22,364,130,622.49
  5. Step 5: Solve for x
    x = 22,364,130,622.49/154,853.82
  6. Step 6: Final answer
    x = 144,420.92

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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.