Home / 128,273.50-177,018.56-70,911.91

Finding the Fourth Proportional to 128,273.50, 177,018.56 and 70,911.91

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Solution

The fourth proportional to 128,273.50, 177,018.56 and 70,911.91 is: 97,859.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,273.50 : 177,018.56 = 70,911.91 : x
  2. Step 2: Convert to fraction form
    128,273.50/177,018.56 = 70,911.91/x
  3. Step 3: Cross multiply
    128,273.50x = 177,018.56 × 70,911.91
  4. Step 4: Simplify right side
    128,273.50x = 12,552,724,195.05
  5. Step 5: Solve for x
    x = 12,552,724,195.05/128,273.50
  6. Step 6: Final answer
    x = 97,859.06

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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.