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Finding the Fourth Proportional to 139,221.83, 192,124.99 and 75,559.64

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Solution

The fourth proportional to 139,221.83, 192,124.99 and 75,559.64 is: 104,271.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,221.83 : 192,124.99 = 75,559.64 : x
  2. Step 2: Convert to fraction form
    139,221.83/192,124.99 = 75,559.64/x
  3. Step 3: Cross multiply
    139,221.83x = 192,124.99 × 75,559.64
  4. Step 4: Simplify right side
    139,221.83x = 14,516,895,079.40
  5. Step 5: Solve for x
    x = 14,516,895,079.40/139,221.83
  6. Step 6: Final answer
    x = 104,271.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.