Home / 235,788.10-325,387.63-128,358.11

Finding the Fourth Proportional to 235,788.10, 325,387.63 and 128,358.11

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Solution

The fourth proportional to 235,788.10, 325,387.63 and 128,358.11 is: 177,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,788.10 : 325,387.63 = 128,358.11 : x
  2. Step 2: Convert to fraction form
    235,788.10/325,387.63 = 128,358.11/x
  3. Step 3: Cross multiply
    235,788.10x = 325,387.63 × 128,358.11
  4. Step 4: Simplify right side
    235,788.10x = 41,766,139,890.21
  5. Step 5: Solve for x
    x = 41,766,139,890.21/235,788.10
  6. Step 6: Final answer
    x = 177,134.21

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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.