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Finding the Fourth Proportional to 125,004.48, 172,510.31 and 68,415.86

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Solution

The fourth proportional to 125,004.48, 172,510.31 and 68,415.86 is: 94,416.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,004.48 : 172,510.31 = 68,415.86 : x
  2. Step 2: Convert to fraction form
    125,004.48/172,510.31 = 68,415.86/x
  3. Step 3: Cross multiply
    125,004.48x = 172,510.31 × 68,415.86
  4. Step 4: Simplify right side
    125,004.48x = 11,802,440,012.89
  5. Step 5: Solve for x
    x = 11,802,440,012.89/125,004.48
  6. Step 6: Final answer
    x = 94,416.14

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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.