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Finding the Fourth Proportional to 140,858.68, 211,155.68 and 47,298.80

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Solution

The fourth proportional to 140,858.68, 211,155.68 and 47,298.80 is: 70,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,858.68 : 211,155.68 = 47,298.80 : x
  2. Step 2: Convert to fraction form
    140,858.68/211,155.68 = 47,298.80/x
  3. Step 3: Cross multiply
    140,858.68x = 211,155.68 × 47,298.80
  4. Step 4: Simplify right side
    140,858.68x = 9,987,410,277.18
  5. Step 5: Solve for x
    x = 9,987,410,277.18/140,858.68
  6. Step 6: Final answer
    x = 70,903.76

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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.