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Finding the Fourth Proportional to 158,677.60, 218,977.32 and 87,056.32

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Solution

The fourth proportional to 158,677.60, 218,977.32 and 87,056.32 is: 120,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,677.60 : 218,977.32 = 87,056.32 : x
  2. Step 2: Convert to fraction form
    158,677.60/218,977.32 = 87,056.32/x
  3. Step 3: Cross multiply
    158,677.60x = 218,977.32 × 87,056.32
  4. Step 4: Simplify right side
    158,677.60x = 19,063,359,642.66
  5. Step 5: Solve for x
    x = 19,063,359,642.66/158,677.60
  6. Step 6: Final answer
    x = 120,138.95

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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.