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Finding the Fourth Proportional to 128,304.43, 177,056.44 and 70,942.76

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Solution

The fourth proportional to 128,304.43, 177,056.44 and 70,942.76 is: 97,898.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304.43 : 177,056.44 = 70,942.76 : x
  2. Step 2: Convert to fraction form
    128,304.43/177,056.44 = 70,942.76/x
  3. Step 3: Cross multiply
    128,304.43x = 177,056.44 × 70,942.76
  4. Step 4: Simplify right side
    128,304.43x = 12,560,872,529.37
  5. Step 5: Solve for x
    x = 12,560,872,529.37/128,304.43
  6. Step 6: Final answer
    x = 97,898.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.