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Finding the Fourth Proportional to 129,235.50, 193,860.54 and 46,129.50

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Solution

The fourth proportional to 129,235.50, 193,860.54 and 46,129.50 is: 69,196.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,235.50 : 193,860.54 = 46,129.50 : x
  2. Step 2: Convert to fraction form
    129,235.50/193,860.54 = 46,129.50/x
  3. Step 3: Cross multiply
    129,235.50x = 193,860.54 × 46,129.50
  4. Step 4: Simplify right side
    129,235.50x = 8,942,689,779.93
  5. Step 5: Solve for x
    x = 8,942,689,779.93/129,235.50
  6. Step 6: Final answer
    x = 69,196.85

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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.