Home / 113,512.40-171,118.70-105,900.56

Finding the Fourth Proportional to 113,512.40, 171,118.70 and 105,900.56

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Solution

The fourth proportional to 113,512.40, 171,118.70 and 105,900.56 is: 159,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,512.40 : 171,118.70 = 105,900.56 : x
  2. Step 2: Convert to fraction form
    113,512.40/171,118.70 = 105,900.56/x
  3. Step 3: Cross multiply
    113,512.40x = 171,118.70 × 105,900.56
  4. Step 4: Simplify right side
    113,512.40x = 18,121,566,156.47
  5. Step 5: Solve for x
    x = 18,121,566,156.47/113,512.40
  6. Step 6: Final answer
    x = 159,643.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.