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Finding the Fourth Proportional to 128,062.42, 192,116.16 and 43,802.80

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Solution

The fourth proportional to 128,062.42, 192,116.16 and 43,802.80 is: 65,711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,062.42 : 192,116.16 = 43,802.80 : x
  2. Step 2: Convert to fraction form
    128,062.42/192,116.16 = 43,802.80/x
  3. Step 3: Cross multiply
    128,062.42x = 192,116.16 × 43,802.80
  4. Step 4: Simplify right side
    128,062.42x = 8,415,225,733.25
  5. Step 5: Solve for x
    x = 8,415,225,733.25/128,062.42
  6. Step 6: Final answer
    x = 65,711.91

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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.