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Finding the Fourth Proportional to 132,818, 183,291.48 and 72,388.40

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Solution

The fourth proportional to 132,818, 183,291.48 and 72,388.40 is: 99,897.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,818 : 183,291.48 = 72,388.40 : x
  2. Step 2: Convert to fraction form
    132,818/183,291.48 = 72,388.40/x
  3. Step 3: Cross multiply
    132,818x = 183,291.48 × 72,388.40
  4. Step 4: Simplify right side
    132,818x = 13,268,176,970.83
  5. Step 5: Solve for x
    x = 13,268,176,970.83/132,818
  6. Step 6: Final answer
    x = 99,897.43

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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.