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Finding the Fourth Proportional to 145,953.48, 218,943.18 and 52,485.96

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Solution

The fourth proportional to 145,953.48, 218,943.18 and 52,485.96 is: 78,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,953.48 : 218,943.18 = 52,485.96 : x
  2. Step 2: Convert to fraction form
    145,953.48/218,943.18 = 52,485.96/x
  3. Step 3: Cross multiply
    145,953.48x = 218,943.18 × 52,485.96
  4. Step 4: Simplify right side
    145,953.48x = 11,491,442,987.75
  5. Step 5: Solve for x
    x = 11,491,442,987.75/145,953.48
  6. Step 6: Final answer
    x = 78,733.60

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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.