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Finding the Fourth Proportional to 103,877.60, 155,816.40 and 97,316.60

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Solution

The fourth proportional to 103,877.60, 155,816.40 and 97,316.60 is: 145,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,877.60 : 155,816.40 = 97,316.60 : x
  2. Step 2: Convert to fraction form
    103,877.60/155,816.40 = 97,316.60/x
  3. Step 3: Cross multiply
    103,877.60x = 155,816.40 × 97,316.60
  4. Step 4: Simplify right side
    103,877.60x = 15,163,522,272.24
  5. Step 5: Solve for x
    x = 15,163,522,272.24/103,877.60
  6. Step 6: Final answer
    x = 145,974.90

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1.5x scale

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.