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Finding the Fourth Proportional to 132,130, 182,339.40 and 79,138

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Solution

The fourth proportional to 132,130, 182,339.40 and 79,138 is: 109,210.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,130 : 182,339.40 = 79,138 : x
  2. Step 2: Convert to fraction form
    132,130/182,339.40 = 79,138/x
  3. Step 3: Cross multiply
    132,130x = 182,339.40 × 79,138
  4. Step 4: Simplify right side
    132,130x = 14,429,975,437.20
  5. Step 5: Solve for x
    x = 14,429,975,437.20/132,130
  6. Step 6: Final answer
    x = 109,210.44

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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.