Home / 102,590.12-141,462.78-66,713.60

Finding the Fourth Proportional to 102,590.12, 141,462.78 and 66,713.60

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Solution

The fourth proportional to 102,590.12, 141,462.78 and 66,713.60 is: 91,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,590.12 : 141,462.78 = 66,713.60 : x
  2. Step 2: Convert to fraction form
    102,590.12/141,462.78 = 66,713.60/x
  3. Step 3: Cross multiply
    102,590.12x = 141,462.78 × 66,713.60
  4. Step 4: Simplify right side
    102,590.12x = 9,437,491,319.81
  5. Step 5: Solve for x
    x = 9,437,491,319.81/102,590.12
  6. Step 6: Final answer
    x = 91,992.20

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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.