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Finding the Fourth Proportional to 130,053.60, 179,625.60 and 87,544.80

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Solution

The fourth proportional to 130,053.60, 179,625.60 and 87,544.80 is: 120,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,053.60 : 179,625.60 = 87,544.80 : x
  2. Step 2: Convert to fraction form
    130,053.60/179,625.60 = 87,544.80/x
  3. Step 3: Cross multiply
    130,053.60x = 179,625.60 × 87,544.80
  4. Step 4: Simplify right side
    130,053.60x = 15,725,287,226.88
  5. Step 5: Solve for x
    x = 15,725,287,226.88/130,053.60
  6. Step 6: Final answer
    x = 120,913.89

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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.