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Finding the Fourth Proportional to 125,341.46, 172,993.29 and 74,382.30

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Solution

The fourth proportional to 125,341.46, 172,993.29 and 74,382.30 is: 102,660.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,341.46 : 172,993.29 = 74,382.30 : x
  2. Step 2: Convert to fraction form
    125,341.46/172,993.29 = 74,382.30/x
  3. Step 3: Cross multiply
    125,341.46x = 172,993.29 × 74,382.30
  4. Step 4: Simplify right side
    125,341.46x = 12,867,638,794.77
  5. Step 5: Solve for x
    x = 12,867,638,794.77/125,341.46
  6. Step 6: Final answer
    x = 102,660.67

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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.