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Finding the Fourth Proportional to 125,000.51, 172,499.49 and 67,638.57

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Solution

The fourth proportional to 125,000.51, 172,499.49 and 67,638.57 is: 93,340.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,000.51 : 172,499.49 = 67,638.57 : x
  2. Step 2: Convert to fraction form
    125,000.51/172,499.49 = 67,638.57/x
  3. Step 3: Cross multiply
    125,000.51x = 172,499.49 × 67,638.57
  4. Step 4: Simplify right side
    125,000.51x = 11,667,618,829.33
  5. Step 5: Solve for x
    x = 11,667,618,829.33/125,000.51
  6. Step 6: Final answer
    x = 93,340.57

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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.