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Finding the Fourth Proportional to 145,090.98, 217,609.47 and 60,828.30

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Solution

The fourth proportional to 145,090.98, 217,609.47 and 60,828.30 is: 91,231.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,090.98 : 217,609.47 = 60,828.30 : x
  2. Step 2: Convert to fraction form
    145,090.98/217,609.47 = 60,828.30/x
  3. Step 3: Cross multiply
    145,090.98x = 217,609.47 × 60,828.30
  4. Step 4: Simplify right side
    145,090.98x = 13,236,814,124.00
  5. Step 5: Solve for x
    x = 13,236,814,124.00/145,090.98
  6. Step 6: Final answer
    x = 91,231.13

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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.