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Finding the Fourth Proportional to 128,041.70, 192,062.54 and 43,802.64

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Solution

The fourth proportional to 128,041.70, 192,062.54 and 43,802.64 is: 65,703.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,041.70 : 192,062.54 = 43,802.64 : x
  2. Step 2: Convert to fraction form
    128,041.70/192,062.54 = 43,802.64/x
  3. Step 3: Cross multiply
    128,041.70x = 192,062.54 × 43,802.64
  4. Step 4: Simplify right side
    128,041.70x = 8,412,846,297.11
  5. Step 5: Solve for x
    x = 8,412,846,297.11/128,041.70
  6. Step 6: Final answer
    x = 65,703.96

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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.