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Finding the Fourth Proportional to 230,994, 318,771.72 and 125,010

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Solution

The fourth proportional to 230,994, 318,771.72 and 125,010 is: 172,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,994 : 318,771.72 = 125,010 : x
  2. Step 2: Convert to fraction form
    230,994/318,771.72 = 125,010/x
  3. Step 3: Cross multiply
    230,994x = 318,771.72 × 125,010
  4. Step 4: Simplify right side
    230,994x = 39,849,652,717.20
  5. Step 5: Solve for x
    x = 39,849,652,717.20/230,994
  6. Step 6: Final answer
    x = 172,513.80

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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.