Home / 128,285.14-177,025.85-70,921.02

Finding the Fourth Proportional to 128,285.14, 177,025.85 and 70,921.02

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Solution

The fourth proportional to 128,285.14, 177,025.85 and 70,921.02 is: 97,866.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,285.14 : 177,025.85 = 70,921.02 : x
  2. Step 2: Convert to fraction form
    128,285.14/177,025.85 = 70,921.02/x
  3. Step 3: Cross multiply
    128,285.14x = 177,025.85 × 70,921.02
  4. Step 4: Simplify right side
    128,285.14x = 12,554,853,848.37
  5. Step 5: Solve for x
    x = 12,554,853,848.37/128,285.14
  6. Step 6: Final answer
    x = 97,866.79

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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.