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Finding the Fourth Proportional to 148,866.40, 223,299.60 and 85,621.60

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Solution

The fourth proportional to 148,866.40, 223,299.60 and 85,621.60 is: 128,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,866.40 : 223,299.60 = 85,621.60 : x
  2. Step 2: Convert to fraction form
    148,866.40/223,299.60 = 85,621.60/x
  3. Step 3: Cross multiply
    148,866.40x = 223,299.60 × 85,621.60
  4. Step 4: Simplify right side
    148,866.40x = 19,119,269,031.36
  5. Step 5: Solve for x
    x = 19,119,269,031.36/148,866.40
  6. Step 6: Final answer
    x = 128,432.40

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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.