Home / 186,634.71-257,587.83-129,357.18

Finding the Fourth Proportional to 186,634.71, 257,587.83 and 129,357.18

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Solution

The fourth proportional to 186,634.71, 257,587.83 and 129,357.18 is: 178,535.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,634.71 : 257,587.83 = 129,357.18 : x
  2. Step 2: Convert to fraction form
    186,634.71/257,587.83 = 129,357.18/x
  3. Step 3: Cross multiply
    186,634.71x = 257,587.83 × 129,357.18
  4. Step 4: Simplify right side
    186,634.71x = 33,320,835,291.12
  5. Step 5: Solve for x
    x = 33,320,835,291.12/186,634.71
  6. Step 6: Final answer
    x = 178,535.04

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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.