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Finding the Fourth Proportional to 145,878.72, 218,904.17 and 61,633.41

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Solution

The fourth proportional to 145,878.72, 218,904.17 and 61,633.41 is: 92,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,878.72 : 218,904.17 = 61,633.41 : x
  2. Step 2: Convert to fraction form
    145,878.72/218,904.17 = 61,633.41/x
  3. Step 3: Cross multiply
    145,878.72x = 218,904.17 × 61,633.41
  4. Step 4: Simplify right side
    145,878.72x = 13,491,810,152.15
  5. Step 5: Solve for x
    x = 13,491,810,152.15/145,878.72
  6. Step 6: Final answer
    x = 92,486.49

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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.