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Finding the Fourth Proportional to 133,179.64, 183,779.76 and 72,738.04

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Solution

The fourth proportional to 133,179.64, 183,779.76 and 72,738.04 is: 100,374.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,179.64 : 183,779.76 = 72,738.04 : x
  2. Step 2: Convert to fraction form
    133,179.64/183,779.76 = 72,738.04/x
  3. Step 3: Cross multiply
    133,179.64x = 183,779.76 × 72,738.04
  4. Step 4: Simplify right side
    133,179.64x = 13,367,779,534.07
  5. Step 5: Solve for x
    x = 13,367,779,534.07/133,179.64
  6. Step 6: Final answer
    x = 100,374.05

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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.