Home / 186,945.12-257,808.96-123,171.84

Finding the Fourth Proportional to 186,945.12, 257,808.96 and 123,171.84

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Solution

The fourth proportional to 186,945.12, 257,808.96 and 123,171.84 is: 169,861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,945.12 : 257,808.96 = 123,171.84 : x
  2. Step 2: Convert to fraction form
    186,945.12/257,808.96 = 123,171.84/x
  3. Step 3: Cross multiply
    186,945.12x = 257,808.96 × 123,171.84
  4. Step 4: Simplify right side
    186,945.12x = 31,754,803,971.69
  5. Step 5: Solve for x
    x = 31,754,803,971.69/186,945.12
  6. Step 6: Final answer
    x = 169,861.64

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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.