Home / 154,087.25-212,636.30-86,104.77

Finding the Fourth Proportional to 154,087.25, 212,636.30 and 86,104.77

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Solution

The fourth proportional to 154,087.25, 212,636.30 and 86,104.77 is: 118,822.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,087.25 : 212,636.30 = 86,104.77 : x
  2. Step 2: Convert to fraction form
    154,087.25/212,636.30 = 86,104.77/x
  3. Step 3: Cross multiply
    154,087.25x = 212,636.30 × 86,104.77
  4. Step 4: Simplify right side
    154,087.25x = 18,308,999,274.63
  5. Step 5: Solve for x
    x = 18,308,999,274.63/154,087.25
  6. Step 6: Final answer
    x = 118,822.29

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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.