Home / 129,426.90-194,140.35-76,809.30

Finding the Fourth Proportional to 129,426.90, 194,140.35 and 76,809.30

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Solution

The fourth proportional to 129,426.90, 194,140.35 and 76,809.30 is: 115,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,426.90 : 194,140.35 = 76,809.30 : x
  2. Step 2: Convert to fraction form
    129,426.90/194,140.35 = 76,809.30/x
  3. Step 3: Cross multiply
    129,426.90x = 194,140.35 × 76,809.30
  4. Step 4: Simplify right side
    129,426.90x = 14,911,784,385.26
  5. Step 5: Solve for x
    x = 14,911,784,385.26/129,426.90
  6. Step 6: Final answer
    x = 115,213.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.