Home / 127,938.72-191,913.84-39,185.76

Finding the Fourth Proportional to 127,938.72, 191,913.84 and 39,185.76

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Solution

The fourth proportional to 127,938.72, 191,913.84 and 39,185.76 is: 58,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,938.72 : 191,913.84 = 39,185.76 : x
  2. Step 2: Convert to fraction form
    127,938.72/191,913.84 = 39,185.76/x
  3. Step 3: Cross multiply
    127,938.72x = 191,913.84 × 39,185.76
  4. Step 4: Simplify right side
    127,938.72x = 7,520,289,674.92
  5. Step 5: Solve for x
    x = 7,520,289,674.92/127,938.72
  6. Step 6: Final answer
    x = 58,780.40

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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.