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Finding the Fourth Proportional to 172,997.40, 258,920.10 and 125,477.40

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Solution

The fourth proportional to 172,997.40, 258,920.10 and 125,477.40 is: 187,798.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,997.40 : 258,920.10 = 125,477.40 : x
  2. Step 2: Convert to fraction form
    172,997.40/258,920.10 = 125,477.40/x
  3. Step 3: Cross multiply
    172,997.40x = 258,920.10 × 125,477.40
  4. Step 4: Simplify right side
    172,997.40x = 32,488,620,955.74
  5. Step 5: Solve for x
    x = 32,488,620,955.74/172,997.40
  6. Step 6: Final answer
    x = 187,798.32

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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.