Home / 186,021.31-256,718.18-105,450.40

Finding the Fourth Proportional to 186,021.31, 256,718.18 and 105,450.40

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Solution

The fourth proportional to 186,021.31, 256,718.18 and 105,450.40 is: 145,526.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,021.31 : 256,718.18 = 105,450.40 : x
  2. Step 2: Convert to fraction form
    186,021.31/256,718.18 = 105,450.40/x
  3. Step 3: Cross multiply
    186,021.31x = 256,718.18 × 105,450.40
  4. Step 4: Simplify right side
    186,021.31x = 27,071,034,768.27
  5. Step 5: Solve for x
    x = 27,071,034,768.27/186,021.31
  6. Step 6: Final answer
    x = 145,526.52

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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.