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Finding the Fourth Proportional to 171,627.60, 257,364.60 and 66,411.60

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Solution

The fourth proportional to 171,627.60, 257,364.60 and 66,411.60 is: 99,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,627.60 : 257,364.60 = 66,411.60 : x
  2. Step 2: Convert to fraction form
    171,627.60/257,364.60 = 66,411.60/x
  3. Step 3: Cross multiply
    171,627.60x = 257,364.60 × 66,411.60
  4. Step 4: Simplify right side
    171,627.60x = 17,091,994,869.36
  5. Step 5: Solve for x
    x = 17,091,994,869.36/171,627.60
  6. Step 6: Final answer
    x = 99,587.68

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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.