Home / 103,139.31-154,563.03-43,915.35

Finding the Fourth Proportional to 103,139.31, 154,563.03 and 43,915.35

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Solution

The fourth proportional to 103,139.31, 154,563.03 and 43,915.35 is: 65,810.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,139.31 : 154,563.03 = 43,915.35 : x
  2. Step 2: Convert to fraction form
    103,139.31/154,563.03 = 43,915.35/x
  3. Step 3: Cross multiply
    103,139.31x = 154,563.03 × 43,915.35
  4. Step 4: Simplify right side
    103,139.31x = 6,787,689,559.51
  5. Step 5: Solve for x
    x = 6,787,689,559.51/103,139.31
  6. Step 6: Final answer
    x = 65,810.89

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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.