Home / 191,235.12-263,910.80-105,197.68

Finding the Fourth Proportional to 191,235.12, 263,910.80 and 105,197.68

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Solution

The fourth proportional to 191,235.12, 263,910.80 and 105,197.68 is: 145,176.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,235.12 : 263,910.80 = 105,197.68 : x
  2. Step 2: Convert to fraction form
    191,235.12/263,910.80 = 105,197.68/x
  3. Step 3: Cross multiply
    191,235.12x = 263,910.80 × 105,197.68
  4. Step 4: Simplify right side
    191,235.12x = 27,762,803,886.94
  5. Step 5: Solve for x
    x = 27,762,803,886.94/191,235.12
  6. Step 6: Final answer
    x = 145,176.28

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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.