Home / 145,139.31-217,717.07-45,313.29

Finding the Fourth Proportional to 145,139.31, 217,717.07 and 45,313.29

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Solution

The fourth proportional to 145,139.31, 217,717.07 and 45,313.29 is: 67,972.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,139.31 : 217,717.07 = 45,313.29 : x
  2. Step 2: Convert to fraction form
    145,139.31/217,717.07 = 45,313.29/x
  3. Step 3: Cross multiply
    145,139.31x = 217,717.07 × 45,313.29
  4. Step 4: Simplify right side
    145,139.31x = 9,865,476,504.29
  5. Step 5: Solve for x
    x = 9,865,476,504.29/145,139.31
  6. Step 6: Final answer
    x = 67,972.46

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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.