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Finding the Fourth Proportional to 125,205.74, 172,753.08 and 74,230.40

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Solution

The fourth proportional to 125,205.74, 172,753.08 and 74,230.40 is: 102,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,205.74 : 172,753.08 = 74,230.40 : x
  2. Step 2: Convert to fraction form
    125,205.74/172,753.08 = 74,230.40/x
  3. Step 3: Cross multiply
    125,205.74x = 172,753.08 × 74,230.40
  4. Step 4: Simplify right side
    125,205.74x = 12,823,530,229.63
  5. Step 5: Solve for x
    x = 12,823,530,229.63/125,205.74
  6. Step 6: Final answer
    x = 102,419.67

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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.