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Finding the Fourth Proportional to 128,313.84, 177,057.66 and 70,945.41

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Solution

The fourth proportional to 128,313.84, 177,057.66 and 70,945.41 is: 97,896.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,313.84 : 177,057.66 = 70,945.41 : x
  2. Step 2: Convert to fraction form
    128,313.84/177,057.66 = 70,945.41/x
  3. Step 3: Cross multiply
    128,313.84x = 177,057.66 × 70,945.41
  4. Step 4: Simplify right side
    128,313.84x = 12,561,428,282.34
  5. Step 5: Solve for x
    x = 12,561,428,282.34/128,313.84
  6. Step 6: Final answer
    x = 97,896.13

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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.