Home / 111,981.69-167,953.10-38,109.69

Finding the Fourth Proportional to 111,981.69, 167,953.10 and 38,109.69

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Solution

The fourth proportional to 111,981.69, 167,953.10 and 38,109.69 is: 57,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,981.69 : 167,953.10 = 38,109.69 : x
  2. Step 2: Convert to fraction form
    111,981.69/167,953.10 = 38,109.69/x
  3. Step 3: Cross multiply
    111,981.69x = 167,953.10 × 38,109.69
  4. Step 4: Simplify right side
    111,981.69x = 6,400,640,384.99
  5. Step 5: Solve for x
    x = 6,400,640,384.99/111,981.69
  6. Step 6: Final answer
    x = 57,157.92

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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.