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Finding the Fourth Proportional to 103,417.98, 155,127.38 and 68,349.84

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Solution

The fourth proportional to 103,417.98, 155,127.38 and 68,349.84 is: 102,525.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,417.98 : 155,127.38 = 68,349.84 : x
  2. Step 2: Convert to fraction form
    103,417.98/155,127.38 = 68,349.84/x
  3. Step 3: Cross multiply
    103,417.98x = 155,127.38 × 68,349.84
  4. Step 4: Simplify right side
    103,417.98x = 10,602,931,260.87
  5. Step 5: Solve for x
    x = 10,602,931,260.87/103,417.98
  6. Step 6: Final answer
    x = 102,525.03

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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.