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Finding the Fourth Proportional to 140,529.70, 210,794.55 and 105,100.30

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Solution

The fourth proportional to 140,529.70, 210,794.55 and 105,100.30 is: 157,650.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,529.70 : 210,794.55 = 105,100.30 : x
  2. Step 2: Convert to fraction form
    140,529.70/210,794.55 = 105,100.30/x
  3. Step 3: Cross multiply
    140,529.70x = 210,794.55 × 105,100.30
  4. Step 4: Simplify right side
    140,529.70x = 22,154,570,443.37
  5. Step 5: Solve for x
    x = 22,154,570,443.37/140,529.70
  6. Step 6: Final answer
    x = 157,650.45

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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.