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Finding the Fourth Proportional to 132,730.90, 183,171.72 and 72,304.90

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Solution

The fourth proportional to 132,730.90, 183,171.72 and 72,304.90 is: 99,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,730.90 : 183,171.72 = 72,304.90 : x
  2. Step 2: Convert to fraction form
    132,730.90/183,171.72 = 72,304.90/x
  3. Step 3: Cross multiply
    132,730.90x = 183,171.72 × 72,304.90
  4. Step 4: Simplify right side
    132,730.90x = 13,244,212,897.43
  5. Step 5: Solve for x
    x = 13,244,212,897.43/132,730.90
  6. Step 6: Final answer
    x = 99,782.44

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1.5x scale

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.