Home / 141,292.68-212,011.62-78,100.98

Finding the Fourth Proportional to 141,292.68, 212,011.62 and 78,100.98

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Solution

The fourth proportional to 141,292.68, 212,011.62 and 78,100.98 is: 117,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,292.68 : 212,011.62 = 78,100.98 : x
  2. Step 2: Convert to fraction form
    141,292.68/212,011.62 = 78,100.98/x
  3. Step 3: Cross multiply
    141,292.68x = 212,011.62 × 78,100.98
  4. Step 4: Simplify right side
    141,292.68x = 16,558,315,293.39
  5. Step 5: Solve for x
    x = 16,558,315,293.39/141,292.68
  6. Step 6: Final answer
    x = 117,191.60

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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.