Home / 129,276.33-178,254.24-91,023.65

Finding the Fourth Proportional to 129,276.33, 178,254.24 and 91,023.65

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Solution

The fourth proportional to 129,276.33, 178,254.24 and 91,023.65 is: 125,509.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,276.33 : 178,254.24 = 91,023.65 : x
  2. Step 2: Convert to fraction form
    129,276.33/178,254.24 = 91,023.65/x
  3. Step 3: Cross multiply
    129,276.33x = 178,254.24 × 91,023.65
  4. Step 4: Simplify right side
    129,276.33x = 16,225,351,756.63
  5. Step 5: Solve for x
    x = 16,225,351,756.63/129,276.33
  6. Step 6: Final answer
    x = 125,509.07

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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.