Home / 111,953.07-167,904.09-31,989.60

Finding the Fourth Proportional to 111,953.07, 167,904.09 and 31,989.60

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Solution

The fourth proportional to 111,953.07, 167,904.09 and 31,989.60 is: 47,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,953.07 : 167,904.09 = 31,989.60 : x
  2. Step 2: Convert to fraction form
    111,953.07/167,904.09 = 31,989.60/x
  3. Step 3: Cross multiply
    111,953.07x = 167,904.09 × 31,989.60
  4. Step 4: Simplify right side
    111,953.07x = 5,371,184,677.46
  5. Step 5: Solve for x
    x = 5,371,184,677.46/111,953.07
  6. Step 6: Final answer
    x = 47,977.11

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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.