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Finding the Fourth Proportional to 140,633.80, 210,950.70 and 42,137.80

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Solution

The fourth proportional to 140,633.80, 210,950.70 and 42,137.80 is: 63,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,633.80 : 210,950.70 = 42,137.80 : x
  2. Step 2: Convert to fraction form
    140,633.80/210,950.70 = 42,137.80/x
  3. Step 3: Cross multiply
    140,633.80x = 210,950.70 × 42,137.80
  4. Step 4: Simplify right side
    140,633.80x = 8,888,998,406.46
  5. Step 5: Solve for x
    x = 8,888,998,406.46/140,633.80
  6. Step 6: Final answer
    x = 63,206.70

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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.