Home / 128,313.48-177,065.43-70,949.45

Finding the Fourth Proportional to 128,313.48, 177,065.43 and 70,949.45

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Solution

The fourth proportional to 128,313.48, 177,065.43 and 70,949.45 is: 97,906.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,313.48 : 177,065.43 = 70,949.45 : x
  2. Step 2: Convert to fraction form
    128,313.48/177,065.43 = 70,949.45/x
  3. Step 3: Cross multiply
    128,313.48x = 177,065.43 × 70,949.45
  4. Step 4: Simplify right side
    128,313.48x = 12,562,695,049.12
  5. Step 5: Solve for x
    x = 12,562,695,049.12/128,313.48
  6. Step 6: Final answer
    x = 97,906.27

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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.