Home / 109,884.86-151,615.67-74,141.18

Finding the Fourth Proportional to 109,884.86, 151,615.67 and 74,141.18

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Solution

The fourth proportional to 109,884.86, 151,615.67 and 74,141.18 is: 102,297.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,884.86 : 151,615.67 = 74,141.18 : x
  2. Step 2: Convert to fraction form
    109,884.86/151,615.67 = 74,141.18/x
  3. Step 3: Cross multiply
    109,884.86x = 151,615.67 × 74,141.18
  4. Step 4: Simplify right side
    109,884.86x = 11,240,964,680.29
  5. Step 5: Solve for x
    x = 11,240,964,680.29/109,884.86
  6. Step 6: Final answer
    x = 102,297.67

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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.