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Finding the Fourth Proportional to 120,325.52, 166,124.52 and 77,322.35

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Solution

The fourth proportional to 120,325.52, 166,124.52 and 77,322.35 is: 106,753.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,325.52 : 166,124.52 = 77,322.35 : x
  2. Step 2: Convert to fraction form
    120,325.52/166,124.52 = 77,322.35/x
  3. Step 3: Cross multiply
    120,325.52x = 166,124.52 × 77,322.35
  4. Step 4: Simplify right side
    120,325.52x = 12,845,137,448.40
  5. Step 5: Solve for x
    x = 12,845,137,448.40/120,325.52
  6. Step 6: Final answer
    x = 106,753.23

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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.