Home / 102,440.72-141,394.96-66,728.72

Finding the Fourth Proportional to 102,440.72, 141,394.96 and 66,728.72

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Solution

The fourth proportional to 102,440.72, 141,394.96 and 66,728.72 is: 92,103.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,440.72 : 141,394.96 = 66,728.72 : x
  2. Step 2: Convert to fraction form
    102,440.72/141,394.96 = 66,728.72/x
  3. Step 3: Cross multiply
    102,440.72x = 141,394.96 × 66,728.72
  4. Step 4: Simplify right side
    102,440.72x = 9,435,104,695.25
  5. Step 5: Solve for x
    x = 9,435,104,695.25/102,440.72
  6. Step 6: Final answer
    x = 92,103.07

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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.