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Finding the Fourth Proportional to 118,482.48, 177,527.70 and 71,638.56

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Solution

The fourth proportional to 118,482.48, 177,527.70 and 71,638.56 is: 107,339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,482.48 : 177,527.70 = 71,638.56 : x
  2. Step 2: Convert to fraction form
    118,482.48/177,527.70 = 71,638.56/x
  3. Step 3: Cross multiply
    118,482.48x = 177,527.70 × 71,638.56
  4. Step 4: Simplify right side
    118,482.48x = 12,717,828,788.11
  5. Step 5: Solve for x
    x = 12,717,828,788.11/118,482.48
  6. Step 6: Final answer
    x = 107,339.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.