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Finding the Fourth Proportional to 125,866.56, 173,696.40 and 72,154.68

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Solution

The fourth proportional to 125,866.56, 173,696.40 and 72,154.68 is: 99,573.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,866.56 : 173,696.40 = 72,154.68 : x
  2. Step 2: Convert to fraction form
    125,866.56/173,696.40 = 72,154.68/x
  3. Step 3: Cross multiply
    125,866.56x = 173,696.40 × 72,154.68
  4. Step 4: Simplify right side
    125,866.56x = 12,533,008,159.15
  5. Step 5: Solve for x
    x = 12,533,008,159.15/125,866.56
  6. Step 6: Final answer
    x = 99,573.77

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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.