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Finding the Fourth Proportional to 212,492.91, 293,241.29 and 121,852.29

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Solution

The fourth proportional to 212,492.91, 293,241.29 and 121,852.29 is: 168,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,492.91 : 293,241.29 = 121,852.29 : x
  2. Step 2: Convert to fraction form
    212,492.91/293,241.29 = 121,852.29/x
  3. Step 3: Cross multiply
    212,492.91x = 293,241.29 × 121,852.29
  4. Step 4: Simplify right side
    212,492.91x = 35,732,122,099.79
  5. Step 5: Solve for x
    x = 35,732,122,099.79/212,492.91
  6. Step 6: Final answer
    x = 168,156.77

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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.