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Finding the Fourth Proportional to 99,703.20, 149,190.30 and 73,459.20

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Solution

The fourth proportional to 99,703.20, 149,190.30 and 73,459.20 is: 109,920.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,703.20 : 149,190.30 = 73,459.20 : x
  2. Step 2: Convert to fraction form
    99,703.20/149,190.30 = 73,459.20/x
  3. Step 3: Cross multiply
    99,703.20x = 149,190.30 × 73,459.20
  4. Step 4: Simplify right side
    99,703.20x = 10,959,400,085.76
  5. Step 5: Solve for x
    x = 10,959,400,085.76/99,703.20
  6. Step 6: Final answer
    x = 109,920.24

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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.