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Finding the Fourth Proportional to 128,306.01, 177,055.13 and 70,942.02

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Solution

The fourth proportional to 128,306.01, 177,055.13 and 70,942.02 is: 97,896.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,306.01 : 177,055.13 = 70,942.02 : x
  2. Step 2: Convert to fraction form
    128,306.01/177,055.13 = 70,942.02/x
  3. Step 3: Cross multiply
    128,306.01x = 177,055.13 × 70,942.02
  4. Step 4: Simplify right side
    128,306.01x = 12,560,648,573.56
  5. Step 5: Solve for x
    x = 12,560,648,573.56/128,306.01
  6. Step 6: Final answer
    x = 97,896.03

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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.