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Finding the Fourth Proportional to 147,804.21, 221,704.70 and 42,619.77

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Solution

The fourth proportional to 147,804.21, 221,704.70 and 42,619.77 is: 63,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,804.21 : 221,704.70 = 42,619.77 : x
  2. Step 2: Convert to fraction form
    147,804.21/221,704.70 = 42,619.77/x
  3. Step 3: Cross multiply
    147,804.21x = 221,704.70 × 42,619.77
  4. Step 4: Simplify right side
    147,804.21x = 9,449,003,108.82
  5. Step 5: Solve for x
    x = 9,449,003,108.82/147,804.21
  6. Step 6: Final answer
    x = 63,929.19

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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.