Home / 154,160.71-212,742.63-86,180.54

Finding the Fourth Proportional to 154,160.71, 212,742.63 and 86,180.54

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Solution

The fourth proportional to 154,160.71, 212,742.63 and 86,180.54 is: 118,929.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,160.71 : 212,742.63 = 86,180.54 : x
  2. Step 2: Convert to fraction form
    154,160.71/212,742.63 = 86,180.54/x
  3. Step 3: Cross multiply
    154,160.71x = 212,742.63 × 86,180.54
  4. Step 4: Simplify right side
    154,160.71x = 18,334,274,734.42
  5. Step 5: Solve for x
    x = 18,334,274,734.42/154,160.71
  6. Step 6: Final answer
    x = 118,929.62

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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.