Home / 130,405.32-179,946.90-103,612.68

Finding the Fourth Proportional to 130,405.32, 179,946.90 and 103,612.68

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Solution

The fourth proportional to 130,405.32, 179,946.90 and 103,612.68 is: 142,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,405.32 : 179,946.90 = 103,612.68 : x
  2. Step 2: Convert to fraction form
    130,405.32/179,946.90 = 103,612.68/x
  3. Step 3: Cross multiply
    130,405.32x = 179,946.90 × 103,612.68
  4. Step 4: Simplify right side
    130,405.32x = 18,644,780,566.69
  5. Step 5: Solve for x
    x = 18,644,780,566.69/130,405.32
  6. Step 6: Final answer
    x = 142,975.61

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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.