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Finding the Fourth Proportional to 99,649.20, 149,473.80 and 88,762.80

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Solution

The fourth proportional to 99,649.20, 149,473.80 and 88,762.80 is: 133,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,649.20 : 149,473.80 = 88,762.80 : x
  2. Step 2: Convert to fraction form
    99,649.20/149,473.80 = 88,762.80/x
  3. Step 3: Cross multiply
    99,649.20x = 149,473.80 × 88,762.80
  4. Step 4: Simplify right side
    99,649.20x = 13,267,713,014.64
  5. Step 5: Solve for x
    x = 13,267,713,014.64/99,649.20
  6. Step 6: Final answer
    x = 133,144.20

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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.