Home / 103,089.40-154,634.10-68,068.60

Finding the Fourth Proportional to 103,089.40, 154,634.10 and 68,068.60

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Solution

The fourth proportional to 103,089.40, 154,634.10 and 68,068.60 is: 102,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,089.40 : 154,634.10 = 68,068.60 : x
  2. Step 2: Convert to fraction form
    103,089.40/154,634.10 = 68,068.60/x
  3. Step 3: Cross multiply
    103,089.40x = 154,634.10 × 68,068.60
  4. Step 4: Simplify right side
    103,089.40x = 10,525,726,699.26
  5. Step 5: Solve for x
    x = 10,525,726,699.26/103,089.40
  6. Step 6: Final answer
    x = 102,102.90

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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.