Home / 101,129.28-151,709.76-31,001.28

Finding the Fourth Proportional to 101,129.28, 151,709.76 and 31,001.28

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Solution

The fourth proportional to 101,129.28, 151,709.76 and 31,001.28 is: 46,506.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,129.28 : 151,709.76 = 31,001.28 : x
  2. Step 2: Convert to fraction form
    101,129.28/151,709.76 = 31,001.28/x
  3. Step 3: Cross multiply
    101,129.28x = 151,709.76 × 31,001.28
  4. Step 4: Simplify right side
    101,129.28x = 4,703,196,748.49
  5. Step 5: Solve for x
    x = 4,703,196,748.49/101,129.28
  6. Step 6: Final answer
    x = 46,506.78

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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.