Home / 113,989.72-170,988.06-39,108.81

Finding the Fourth Proportional to 113,989.72, 170,988.06 and 39,108.81

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Solution

The fourth proportional to 113,989.72, 170,988.06 and 39,108.81 is: 58,664.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,989.72 : 170,988.06 = 39,108.81 : x
  2. Step 2: Convert to fraction form
    113,989.72/170,988.06 = 39,108.81/x
  3. Step 3: Cross multiply
    113,989.72x = 170,988.06 × 39,108.81
  4. Step 4: Simplify right side
    113,989.72x = 6,687,139,550.81
  5. Step 5: Solve for x
    x = 6,687,139,550.81/113,989.72
  6. Step 6: Final answer
    x = 58,664.41

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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.