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Finding the Fourth Proportional to 103,710.60, 155,393.10 and 97,489.80

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Solution

The fourth proportional to 103,710.60, 155,393.10 and 97,489.80 is: 146,072.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,710.60 : 155,393.10 = 97,489.80 : x
  2. Step 2: Convert to fraction form
    103,710.60/155,393.10 = 97,489.80/x
  3. Step 3: Cross multiply
    103,710.60x = 155,393.10 × 97,489.80
  4. Step 4: Simplify right side
    103,710.60x = 15,149,242,240.38
  5. Step 5: Solve for x
    x = 15,149,242,240.38/103,710.60
  6. Step 6: Final answer
    x = 146,072.26

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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.