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Finding the Fourth Proportional to 103,706.60, 155,387.10 and 97,485.80

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Solution

The fourth proportional to 103,706.60, 155,387.10 and 97,485.80 is: 146,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,706.60 : 155,387.10 = 97,485.80 : x
  2. Step 2: Convert to fraction form
    103,706.60/155,387.10 = 97,485.80/x
  3. Step 3: Cross multiply
    103,706.60x = 155,387.10 × 97,485.80
  4. Step 4: Simplify right side
    103,706.60x = 15,148,035,753.18
  5. Step 5: Solve for x
    x = 15,148,035,753.18/103,706.60
  6. Step 6: Final answer
    x = 146,066.27

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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.