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Finding the Fourth Proportional to 132,810, 183,280.44 and 72,380.40

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Solution

The fourth proportional to 132,810, 183,280.44 and 72,380.40 is: 99,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,810 : 183,280.44 = 72,380.40 : x
  2. Step 2: Convert to fraction form
    132,810/183,280.44 = 72,380.40/x
  3. Step 3: Cross multiply
    132,810x = 183,280.44 × 72,380.40
  4. Step 4: Simplify right side
    132,810x = 13,265,911,559.38
  5. Step 5: Solve for x
    x = 13,265,911,559.38/132,810
  6. Step 6: Final answer
    x = 99,886.39

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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.