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Finding the Fourth Proportional to 145,863.76, 218,650.29 and 61,645.12

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Solution

The fourth proportional to 145,863.76, 218,650.29 and 61,645.12 is: 92,406.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,863.76 : 218,650.29 = 61,645.12 : x
  2. Step 2: Convert to fraction form
    145,863.76/218,650.29 = 61,645.12/x
  3. Step 3: Cross multiply
    145,863.76x = 218,650.29 × 61,645.12
  4. Step 4: Simplify right side
    145,863.76x = 13,478,723,365.08
  5. Step 5: Solve for x
    x = 13,478,723,365.08/145,863.76
  6. Step 6: Final answer
    x = 92,406.25

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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.