Home / 186,828.12-257,755.41-143,820.76

Finding the Fourth Proportional to 186,828.12, 257,755.41 and 143,820.76

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Solution

The fourth proportional to 186,828.12, 257,755.41 and 143,820.76 is: 198,420.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,828.12 : 257,755.41 = 143,820.76 : x
  2. Step 2: Convert to fraction form
    186,828.12/257,755.41 = 143,820.76/x
  3. Step 3: Cross multiply
    186,828.12x = 257,755.41 × 143,820.76
  4. Step 4: Simplify right side
    186,828.12x = 37,070,578,960.31
  5. Step 5: Solve for x
    x = 37,070,578,960.31/186,828.12
  6. Step 6: Final answer
    x = 198,420.77

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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.