Home / 123,484.61-170,416.64-75,731.47

Finding the Fourth Proportional to 123,484.61, 170,416.64 and 75,731.47

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Solution

The fourth proportional to 123,484.61, 170,416.64 and 75,731.47 is: 104,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,484.61 : 170,416.64 = 75,731.47 : x
  2. Step 2: Convert to fraction form
    123,484.61/170,416.64 = 75,731.47/x
  3. Step 3: Cross multiply
    123,484.61x = 170,416.64 × 75,731.47
  4. Step 4: Simplify right side
    123,484.61x = 12,905,902,659.66
  5. Step 5: Solve for x
    x = 12,905,902,659.66/123,484.61
  6. Step 6: Final answer
    x = 104,514.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.