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Finding the Fourth Proportional to 125,873.40, 173,691.05 and 74,187.12

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Solution

The fourth proportional to 125,873.40, 173,691.05 and 74,187.12 is: 102,369.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,873.40 : 173,691.05 = 74,187.12 : x
  2. Step 2: Convert to fraction form
    125,873.40/173,691.05 = 74,187.12/x
  3. Step 3: Cross multiply
    125,873.40x = 173,691.05 × 74,187.12
  4. Step 4: Simplify right side
    125,873.40x = 12,885,638,583.81
  5. Step 5: Solve for x
    x = 12,885,638,583.81/125,873.40
  6. Step 6: Final answer
    x = 102,369.83

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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.