Home / 129,618.30-194,427.45-77,000.70

Finding the Fourth Proportional to 129,618.30, 194,427.45 and 77,000.70

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Solution

The fourth proportional to 129,618.30, 194,427.45 and 77,000.70 is: 115,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,618.30 : 194,427.45 = 77,000.70 : x
  2. Step 2: Convert to fraction form
    129,618.30/194,427.45 = 77,000.70/x
  3. Step 3: Cross multiply
    129,618.30x = 194,427.45 × 77,000.70
  4. Step 4: Simplify right side
    129,618.30x = 14,971,049,749.22
  5. Step 5: Solve for x
    x = 14,971,049,749.22/129,618.30
  6. Step 6: Final answer
    x = 115,501.05

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1.5x scale

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.