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Finding the Fourth Proportional to 99,347.40, 149,021.10 and 73,168.20

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Solution

The fourth proportional to 99,347.40, 149,021.10 and 73,168.20 is: 109,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,347.40 : 149,021.10 = 73,168.20 : x
  2. Step 2: Convert to fraction form
    99,347.40/149,021.10 = 73,168.20/x
  3. Step 3: Cross multiply
    99,347.40x = 149,021.10 × 73,168.20
  4. Step 4: Simplify right side
    99,347.40x = 10,903,605,649.02
  5. Step 5: Solve for x
    x = 10,903,605,649.02/99,347.40
  6. Step 6: Final answer
    x = 109,752.30

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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.