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Finding the Fourth Proportional to 145,728.69, 218,600.84 and 45,896.66

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Solution

The fourth proportional to 145,728.69, 218,600.84 and 45,896.66 is: 68,847.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,728.69 : 218,600.84 = 45,896.66 : x
  2. Step 2: Convert to fraction form
    145,728.69/218,600.84 = 45,896.66/x
  3. Step 3: Cross multiply
    145,728.69x = 218,600.84 × 45,896.66
  4. Step 4: Simplify right side
    145,728.69x = 10,033,047,106.71
  5. Step 5: Solve for x
    x = 10,033,047,106.71/145,728.69
  6. Step 6: Final answer
    x = 68,847.44

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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.