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Finding the Fourth Proportional to 145,722.90, 218,613.81 and 61,483.28

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Solution

The fourth proportional to 145,722.90, 218,613.81 and 61,483.28 is: 92,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,722.90 : 218,613.81 = 61,483.28 : x
  2. Step 2: Convert to fraction form
    145,722.90/218,613.81 = 61,483.28/x
  3. Step 3: Cross multiply
    145,722.90x = 218,613.81 × 61,483.28
  4. Step 4: Simplify right side
    145,722.90x = 13,441,093,229.59
  5. Step 5: Solve for x
    x = 13,441,093,229.59/145,722.90
  6. Step 6: Final answer
    x = 92,237.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.