Home / 97,321.20-145,866.60-72,668.40

Finding the Fourth Proportional to 97,321.20, 145,866.60 and 72,668.40

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Solution

The fourth proportional to 97,321.20, 145,866.60 and 72,668.40 is: 108,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,321.20 : 145,866.60 = 72,668.40 : x
  2. Step 2: Convert to fraction form
    97,321.20/145,866.60 = 72,668.40/x
  3. Step 3: Cross multiply
    97,321.20x = 145,866.60 × 72,668.40
  4. Step 4: Simplify right side
    97,321.20x = 10,599,892,435.44
  5. Step 5: Solve for x
    x = 10,599,892,435.44/97,321.20
  6. Step 6: Final answer
    x = 108,916.58

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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.