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Finding the Fourth Proportional to 172,079.96, 258,118.91 and 66,898.93

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Solution

The fourth proportional to 172,079.96, 258,118.91 and 66,898.93 is: 100,347.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,079.96 : 258,118.91 = 66,898.93 : x
  2. Step 2: Convert to fraction form
    172,079.96/258,118.91 = 66,898.93/x
  3. Step 3: Cross multiply
    172,079.96x = 258,118.91 × 66,898.93
  4. Step 4: Simplify right side
    172,079.96x = 17,267,879,023.12
  5. Step 5: Solve for x
    x = 17,267,879,023.12/172,079.96
  6. Step 6: Final answer
    x = 100,347.99

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1.5x scale

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.