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Finding the Fourth Proportional to 125,356.28, 172,977.60 and 74,350.64

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Solution

The fourth proportional to 125,356.28, 172,977.60 and 74,350.64 is: 102,595.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,356.28 : 172,977.60 = 74,350.64 : x
  2. Step 2: Convert to fraction form
    125,356.28/172,977.60 = 74,350.64/x
  3. Step 3: Cross multiply
    125,356.28x = 172,977.60 × 74,350.64
  4. Step 4: Simplify right side
    125,356.28x = 12,860,995,265.66
  5. Step 5: Solve for x
    x = 12,860,995,265.66/125,356.28
  6. Step 6: Final answer
    x = 102,595.54

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1.5x scale

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.