Home / 142,188.84-212,997.12-67,381.14

Finding the Fourth Proportional to 142,188.84, 212,997.12 and 67,381.14

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Solution

The fourth proportional to 142,188.84, 212,997.12 and 67,381.14 is: 100,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,188.84 : 212,997.12 = 67,381.14 : x
  2. Step 2: Convert to fraction form
    142,188.84/212,997.12 = 67,381.14/x
  3. Step 3: Cross multiply
    142,188.84x = 212,997.12 × 67,381.14
  4. Step 4: Simplify right side
    142,188.84x = 14,351,988,762.32
  5. Step 5: Solve for x
    x = 14,351,988,762.32/142,188.84
  6. Step 6: Final answer
    x = 100,936.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.