Home / 122,310.34-168,631.98-79,213.69

Finding the Fourth Proportional to 122,310.34, 168,631.98 and 79,213.69

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Solution

The fourth proportional to 122,310.34, 168,631.98 and 79,213.69 is: 109,213.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,310.34 : 168,631.98 = 79,213.69 : x
  2. Step 2: Convert to fraction form
    122,310.34/168,631.98 = 79,213.69/x
  3. Step 3: Cross multiply
    122,310.34x = 168,631.98 × 79,213.69
  4. Step 4: Simplify right side
    122,310.34x = 13,357,961,387.81
  5. Step 5: Solve for x
    x = 13,357,961,387.81/122,310.34
  6. Step 6: Final answer
    x = 109,213.67

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1.5x scale

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.