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Finding the Fourth Proportional to 125,838.20, 173,567.94 and 85,528.28

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Solution

The fourth proportional to 125,838.20, 173,567.94 and 85,528.28 is: 117,968.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,838.20 : 173,567.94 = 85,528.28 : x
  2. Step 2: Convert to fraction form
    125,838.20/173,567.94 = 85,528.28/x
  3. Step 3: Cross multiply
    125,838.20x = 173,567.94 × 85,528.28
  4. Step 4: Simplify right side
    125,838.20x = 14,844,967,371.34
  5. Step 5: Solve for x
    x = 14,844,967,371.34/125,838.20
  6. Step 6: Final answer
    x = 117,968.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.