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Finding the Fourth Proportional to 103,656, 155,477.85 and 60,985.41

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Solution

The fourth proportional to 103,656, 155,477.85 and 60,985.41 is: 91,474.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,656 : 155,477.85 = 60,985.41 : x
  2. Step 2: Convert to fraction form
    103,656/155,477.85 = 60,985.41/x
  3. Step 3: Cross multiply
    103,656x = 155,477.85 × 60,985.41
  4. Step 4: Simplify right side
    103,656x = 9,481,880,428.17
  5. Step 5: Solve for x
    x = 9,481,880,428.17/103,656
  6. Step 6: Final answer
    x = 91,474.50

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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.