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Finding the Fourth Proportional to 125,299.39, 172,911.07 and 70,850.69

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Solution

The fourth proportional to 125,299.39, 172,911.07 and 70,850.69 is: 97,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,299.39 : 172,911.07 = 70,850.69 : x
  2. Step 2: Convert to fraction form
    125,299.39/172,911.07 = 70,850.69/x
  3. Step 3: Cross multiply
    125,299.39x = 172,911.07 × 70,850.69
  4. Step 4: Simplify right side
    125,299.39x = 12,250,868,618.14
  5. Step 5: Solve for x
    x = 12,250,868,618.14/125,299.39
  6. Step 6: Final answer
    x = 97,772.77

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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.