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Finding the Fourth Proportional to 125,220.84, 172,804.40 and 67,861.74

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Solution

The fourth proportional to 125,220.84, 172,804.40 and 67,861.74 is: 93,649.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,220.84 : 172,804.40 = 67,861.74 : x
  2. Step 2: Convert to fraction form
    125,220.84/172,804.40 = 67,861.74/x
  3. Step 3: Cross multiply
    125,220.84x = 172,804.40 × 67,861.74
  4. Step 4: Simplify right side
    125,220.84x = 11,726,807,263.66
  5. Step 5: Solve for x
    x = 11,726,807,263.66/125,220.84
  6. Step 6: Final answer
    x = 93,649.01

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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.