Home / 105,931.45-146,208.70-73,271.79

Finding the Fourth Proportional to 105,931.45, 146,208.70 and 73,271.79

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Solution

The fourth proportional to 105,931.45, 146,208.70 and 73,271.79 is: 101,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,931.45 : 146,208.70 = 73,271.79 : x
  2. Step 2: Convert to fraction form
    105,931.45/146,208.70 = 73,271.79/x
  3. Step 3: Cross multiply
    105,931.45x = 146,208.70 × 73,271.79
  4. Step 4: Simplify right side
    105,931.45x = 10,712,972,842.01
  5. Step 5: Solve for x
    x = 10,712,972,842.01/105,931.45
  6. Step 6: Final answer
    x = 101,131.19

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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.