Home / 130,257.45-179,743.05-72,881.37

Finding the Fourth Proportional to 130,257.45, 179,743.05 and 72,881.37

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Solution

The fourth proportional to 130,257.45, 179,743.05 and 72,881.37 is: 100,569.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,257.45 : 179,743.05 = 72,881.37 : x
  2. Step 2: Convert to fraction form
    130,257.45/179,743.05 = 72,881.37/x
  3. Step 3: Cross multiply
    130,257.45x = 179,743.05 × 72,881.37
  4. Step 4: Simplify right side
    130,257.45x = 13,099,919,731.98
  5. Step 5: Solve for x
    x = 13,099,919,731.98/130,257.45
  6. Step 6: Final answer
    x = 100,569.45

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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.