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Finding the Fourth Proportional to 99,570.60, 149,355.90 and 73,132.20

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Solution

The fourth proportional to 99,570.60, 149,355.90 and 73,132.20 is: 109,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,570.60 : 149,355.90 = 73,132.20 : x
  2. Step 2: Convert to fraction form
    99,570.60/149,355.90 = 73,132.20/x
  3. Step 3: Cross multiply
    99,570.60x = 149,355.90 × 73,132.20
  4. Step 4: Simplify right side
    99,570.60x = 10,922,725,549.98
  5. Step 5: Solve for x
    x = 10,922,725,549.98/99,570.60
  6. Step 6: Final answer
    x = 109,698.30

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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.