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Finding the Fourth Proportional to 154,492.41, 213,189.21 and 86,497.95

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Solution

The fourth proportional to 154,492.41, 213,189.21 and 86,497.95 is: 119,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,492.41 : 213,189.21 = 86,497.95 : x
  2. Step 2: Convert to fraction form
    154,492.41/213,189.21 = 86,497.95/x
  3. Step 3: Cross multiply
    154,492.41x = 213,189.21 × 86,497.95
  4. Step 4: Simplify right side
    154,492.41x = 18,440,429,627.12
  5. Step 5: Solve for x
    x = 18,440,429,627.12/154,492.41
  6. Step 6: Final answer
    x = 119,361.40

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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.