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Finding the Fourth Proportional to 148,940.20, 223,421.10 and 89,648.20

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Solution

The fourth proportional to 148,940.20, 223,421.10 and 89,648.20 is: 134,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,940.20 : 223,421.10 = 89,648.20 : x
  2. Step 2: Convert to fraction form
    148,940.20/223,421.10 = 89,648.20/x
  3. Step 3: Cross multiply
    148,940.20x = 223,421.10 × 89,648.20
  4. Step 4: Simplify right side
    148,940.20x = 20,029,299,457.02
  5. Step 5: Solve for x
    x = 20,029,299,457.02/148,940.20
  6. Step 6: Final answer
    x = 134,478.80

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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.