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Finding the Fourth Proportional to 172,659.04, 258,867.93 and 76,543.98

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Solution

The fourth proportional to 172,659.04, 258,867.93 and 76,543.98 is: 114,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,659.04 : 258,867.93 = 76,543.98 : x
  2. Step 2: Convert to fraction form
    172,659.04/258,867.93 = 76,543.98/x
  3. Step 3: Cross multiply
    172,659.04x = 258,867.93 × 76,543.98
  4. Step 4: Simplify right side
    172,659.04x = 19,814,781,656.56
  5. Step 5: Solve for x
    x = 19,814,781,656.56/172,659.04
  6. Step 6: Final answer
    x = 114,762.49

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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.