Home / 235,509.18-324,999.30-128,080.11

Finding the Fourth Proportional to 235,509.18, 324,999.30 and 128,080.11

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Solution

The fourth proportional to 235,509.18, 324,999.30 and 128,080.11 is: 176,748.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,509.18 : 324,999.30 = 128,080.11 : x
  2. Step 2: Convert to fraction form
    235,509.18/324,999.30 = 128,080.11/x
  3. Step 3: Cross multiply
    235,509.18x = 324,999.30 × 128,080.11
  4. Step 4: Simplify right side
    235,509.18x = 41,625,946,093.92
  5. Step 5: Solve for x
    x = 41,625,946,093.92/235,509.18
  6. Step 6: Final answer
    x = 176,748.72

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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.