Home / 186,117.12-279,203.28-86,287.36

Finding the Fourth Proportional to 186,117.12, 279,203.28 and 86,287.36

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Solution

The fourth proportional to 186,117.12, 279,203.28 and 86,287.36 is: 129,443.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,117.12 : 279,203.28 = 86,287.36 : x
  2. Step 2: Convert to fraction form
    186,117.12/279,203.28 = 86,287.36/x
  3. Step 3: Cross multiply
    186,117.12x = 279,203.28 × 86,287.36
  4. Step 4: Simplify right side
    186,117.12x = 24,091,713,934.54
  5. Step 5: Solve for x
    x = 24,091,713,934.54/186,117.12
  6. Step 6: Final answer
    x = 129,443.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.