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Finding the Fourth Proportional to 154,104.93, 212,664.87 and 86,124.69

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Solution

The fourth proportional to 154,104.93, 212,664.87 and 86,124.69 is: 118,852.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,104.93 : 212,664.87 = 86,124.69 : x
  2. Step 2: Convert to fraction form
    154,104.93/212,664.87 = 86,124.69/x
  3. Step 3: Cross multiply
    154,104.93x = 212,664.87 × 86,124.69
  4. Step 4: Simplify right side
    154,104.93x = 18,315,696,002.64
  5. Step 5: Solve for x
    x = 18,315,696,002.64/154,104.93
  6. Step 6: Final answer
    x = 118,852.11

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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.