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Finding the Fourth Proportional to 100,857.76, 151,303.06 and 29,787.59

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Solution

The fourth proportional to 100,857.76, 151,303.06 and 29,787.59 is: 44,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,857.76 : 151,303.06 = 29,787.59 : x
  2. Step 2: Convert to fraction form
    100,857.76/151,303.06 = 29,787.59/x
  3. Step 3: Cross multiply
    100,857.76x = 151,303.06 × 29,787.59
  4. Step 4: Simplify right side
    100,857.76x = 4,506,953,517.03
  5. Step 5: Solve for x
    x = 4,506,953,517.03/100,857.76
  6. Step 6: Final answer
    x = 44,686.23

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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.