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Finding the Fourth Proportional to 140,164.60, 210,246.90 and 139,289.80

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Solution

The fourth proportional to 140,164.60, 210,246.90 and 139,289.80 is: 208,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,164.60 : 210,246.90 = 139,289.80 : x
  2. Step 2: Convert to fraction form
    140,164.60/210,246.90 = 139,289.80/x
  3. Step 3: Cross multiply
    140,164.60x = 210,246.90 × 139,289.80
  4. Step 4: Simplify right side
    140,164.60x = 29,285,248,651.62
  5. Step 5: Solve for x
    x = 29,285,248,651.62/140,164.60
  6. Step 6: Final answer
    x = 208,934.70

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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.