Home / 120,717.09-166,581.83-75,392.40

Finding the Fourth Proportional to 120,717.09, 166,581.83 and 75,392.40

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Solution

The fourth proportional to 120,717.09, 166,581.83 and 75,392.40 is: 104,036.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,717.09 : 166,581.83 = 75,392.40 : x
  2. Step 2: Convert to fraction form
    120,717.09/166,581.83 = 75,392.40/x
  3. Step 3: Cross multiply
    120,717.09x = 166,581.83 × 75,392.40
  4. Step 4: Simplify right side
    120,717.09x = 12,559,003,583.13
  5. Step 5: Solve for x
    x = 12,559,003,583.13/120,717.09
  6. Step 6: Final answer
    x = 104,036.67

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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.