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Finding the Fourth Proportional to 133,358.98, 183,948.69 and 85,536.58

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Solution

The fourth proportional to 133,358.98, 183,948.69 and 85,536.58 is: 117,984.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,358.98 : 183,948.69 = 85,536.58 : x
  2. Step 2: Convert to fraction form
    133,358.98/183,948.69 = 85,536.58/x
  3. Step 3: Cross multiply
    133,358.98x = 183,948.69 × 85,536.58
  4. Step 4: Simplify right side
    133,358.98x = 15,734,341,838.08
  5. Step 5: Solve for x
    x = 15,734,341,838.08/133,358.98
  6. Step 6: Final answer
    x = 117,984.87

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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.