Home / 97,172.20-145,931.10-70,906.60

Finding the Fourth Proportional to 97,172.20, 145,931.10 and 70,906.60

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Solution

The fourth proportional to 97,172.20, 145,931.10 and 70,906.60 is: 106,485.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,172.20 : 145,931.10 = 70,906.60 : x
  2. Step 2: Convert to fraction form
    97,172.20/145,931.10 = 70,906.60/x
  3. Step 3: Cross multiply
    97,172.20x = 145,931.10 × 70,906.60
  4. Step 4: Simplify right side
    97,172.20x = 10,347,478,135.26
  5. Step 5: Solve for x
    x = 10,347,478,135.26/97,172.20
  6. Step 6: Final answer
    x = 106,485.99

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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.