Home / 141,630.42-195,438.07-81,187.21

Finding the Fourth Proportional to 141,630.42, 195,438.07 and 81,187.21

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Solution

The fourth proportional to 141,630.42, 195,438.07 and 81,187.21 is: 112,031.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,630.42 : 195,438.07 = 81,187.21 : x
  2. Step 2: Convert to fraction form
    141,630.42/195,438.07 = 81,187.21/x
  3. Step 3: Cross multiply
    141,630.42x = 195,438.07 × 81,187.21
  4. Step 4: Simplify right side
    141,630.42x = 15,867,071,520.19
  5. Step 5: Solve for x
    x = 15,867,071,520.19/141,630.42
  6. Step 6: Final answer
    x = 112,031.52

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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.