Home / 105,638.07-145,783.90-57,894.35

Finding the Fourth Proportional to 105,638.07, 145,783.90 and 57,894.35

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Solution

The fourth proportional to 105,638.07, 145,783.90 and 57,894.35 is: 79,896.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,638.07 : 145,783.90 = 57,894.35 : x
  2. Step 2: Convert to fraction form
    105,638.07/145,783.90 = 57,894.35/x
  3. Step 3: Cross multiply
    105,638.07x = 145,783.90 × 57,894.35
  4. Step 4: Simplify right side
    105,638.07x = 8,440,063,474.41
  5. Step 5: Solve for x
    x = 8,440,063,474.41/105,638.07
  6. Step 6: Final answer
    x = 79,896.04

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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.