Home / 129,973.39-179,288.46-78,254.53

Finding the Fourth Proportional to 129,973.39, 179,288.46 and 78,254.53

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Solution

The fourth proportional to 129,973.39, 179,288.46 and 78,254.53 is: 107,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,973.39 : 179,288.46 = 78,254.53 : x
  2. Step 2: Convert to fraction form
    129,973.39/179,288.46 = 78,254.53/x
  3. Step 3: Cross multiply
    129,973.39x = 179,288.46 × 78,254.53
  4. Step 4: Simplify right side
    129,973.39x = 14,030,134,171.72
  5. Step 5: Solve for x
    x = 14,030,134,171.72/129,973.39
  6. Step 6: Final answer
    x = 107,946.20

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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.