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Finding the Fourth Proportional to 168,461.40, 252,983.70 and 89,729.40

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Solution

The fourth proportional to 168,461.40, 252,983.70 and 89,729.40 is: 134,749.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,461.40 : 252,983.70 = 89,729.40 : x
  2. Step 2: Convert to fraction form
    168,461.40/252,983.70 = 89,729.40/x
  3. Step 3: Cross multiply
    168,461.40x = 252,983.70 × 89,729.40
  4. Step 4: Simplify right side
    168,461.40x = 22,700,075,610.78
  5. Step 5: Solve for x
    x = 22,700,075,610.78/168,461.40
  6. Step 6: Final answer
    x = 134,749.42

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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.