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Finding the Fourth Proportional to 145,861.26, 218,646.54 and 61,642.62

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Solution

The fourth proportional to 145,861.26, 218,646.54 and 61,642.62 is: 92,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861.26 : 218,646.54 = 61,642.62 : x
  2. Step 2: Convert to fraction form
    145,861.26/218,646.54 = 61,642.62/x
  3. Step 3: Cross multiply
    145,861.26x = 218,646.54 × 61,642.62
  4. Step 4: Simplify right side
    145,861.26x = 13,477,945,579.53
  5. Step 5: Solve for x
    x = 13,477,945,579.53/145,861.26
  6. Step 6: Final answer
    x = 92,402.50

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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.