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Finding the Fourth Proportional to 125,005.86, 172,508.54 and 67,645.18

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Solution

The fourth proportional to 125,005.86, 172,508.54 and 67,645.18 is: 93,350.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,005.86 : 172,508.54 = 67,645.18 : x
  2. Step 2: Convert to fraction form
    125,005.86/172,508.54 = 67,645.18/x
  3. Step 3: Cross multiply
    125,005.86x = 172,508.54 × 67,645.18
  4. Step 4: Simplify right side
    125,005.86x = 11,669,371,239.84
  5. Step 5: Solve for x
    x = 11,669,371,239.84/125,005.86
  6. Step 6: Final answer
    x = 93,350.59

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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.