Home / 127,815.26-191,443.50-105,376.64

Finding the Fourth Proportional to 127,815.26, 191,443.50 and 105,376.64

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Solution

The fourth proportional to 127,815.26, 191,443.50 and 105,376.64 is: 157,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,815.26 : 191,443.50 = 105,376.64 : x
  2. Step 2: Convert to fraction form
    127,815.26/191,443.50 = 105,376.64/x
  3. Step 3: Cross multiply
    127,815.26x = 191,443.50 × 105,376.64
  4. Step 4: Simplify right side
    127,815.26x = 20,173,672,779.84
  5. Step 5: Solve for x
    x = 20,173,672,779.84/127,815.26
  6. Step 6: Final answer
    x = 157,834.62

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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.