Home / 102,464.75-141,401.08-57,142.79

Finding the Fourth Proportional to 102,464.75, 141,401.08 and 57,142.79

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Solution

The fourth proportional to 102,464.75, 141,401.08 and 57,142.79 is: 78,856.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,464.75 : 141,401.08 = 57,142.79 : x
  2. Step 2: Convert to fraction form
    102,464.75/141,401.08 = 57,142.79/x
  3. Step 3: Cross multiply
    102,464.75x = 141,401.08 × 57,142.79
  4. Step 4: Simplify right side
    102,464.75x = 8,080,051,830.07
  5. Step 5: Solve for x
    x = 8,080,051,830.07/102,464.75
  6. Step 6: Final answer
    x = 78,856.89

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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.