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Finding the Fourth Proportional to 140,665.51, 210,843.46 and 69,482.76

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Solution

The fourth proportional to 140,665.51, 210,843.46 and 69,482.76 is: 104,147.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,665.51 : 210,843.46 = 69,482.76 : x
  2. Step 2: Convert to fraction form
    140,665.51/210,843.46 = 69,482.76/x
  3. Step 3: Cross multiply
    140,665.51x = 210,843.46 × 69,482.76
  4. Step 4: Simplify right side
    140,665.51x = 14,649,985,528.75
  5. Step 5: Solve for x
    x = 14,649,985,528.75/140,665.51
  6. Step 6: Final answer
    x = 104,147.67

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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.