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Finding the Fourth Proportional to 125,296.40, 172,911.24 and 68,704.40

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Solution

The fourth proportional to 125,296.40, 172,911.24 and 68,704.40 is: 94,813.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,296.40 : 172,911.24 = 68,704.40 : x
  2. Step 2: Convert to fraction form
    125,296.40/172,911.24 = 68,704.40/x
  3. Step 3: Cross multiply
    125,296.40x = 172,911.24 × 68,704.40
  4. Step 4: Simplify right side
    125,296.40x = 11,879,762,997.46
  5. Step 5: Solve for x
    x = 11,879,762,997.46/125,296.40
  6. Step 6: Final answer
    x = 94,813.28

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1.5x scale

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.