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Finding the Fourth Proportional to 172,130.28, 258,188.40 and 59,835.96

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Solution

The fourth proportional to 172,130.28, 258,188.40 and 59,835.96 is: 89,751.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,130.28 : 258,188.40 = 59,835.96 : x
  2. Step 2: Convert to fraction form
    172,130.28/258,188.40 = 59,835.96/x
  3. Step 3: Cross multiply
    172,130.28x = 258,188.40 × 59,835.96
  4. Step 4: Simplify right side
    172,130.28x = 15,448,950,774.86
  5. Step 5: Solve for x
    x = 15,448,950,774.86/172,130.28
  6. Step 6: Final answer
    x = 89,751.50

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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.