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Finding the Fourth Proportional to 124,692.77, 172,076.21 and 70,977.77

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Solution

The fourth proportional to 124,692.77, 172,076.21 and 70,977.77 is: 97,949.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,692.77 : 172,076.21 = 70,977.77 : x
  2. Step 2: Convert to fraction form
    124,692.77/172,076.21 = 70,977.77/x
  3. Step 3: Cross multiply
    124,692.77x = 172,076.21 × 70,977.77
  4. Step 4: Simplify right side
    124,692.77x = 12,213,585,655.85
  5. Step 5: Solve for x
    x = 12,213,585,655.85/124,692.77
  6. Step 6: Final answer
    x = 97,949.43

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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.