Home / 122,289.28-168,687.72-76,895.40

Finding the Fourth Proportional to 122,289.28, 168,687.72 and 76,895.40

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Solution

The fourth proportional to 122,289.28, 168,687.72 and 76,895.40 is: 106,070.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,289.28 : 168,687.72 = 76,895.40 : x
  2. Step 2: Convert to fraction form
    122,289.28/168,687.72 = 76,895.40/x
  3. Step 3: Cross multiply
    122,289.28x = 168,687.72 × 76,895.40
  4. Step 4: Simplify right side
    122,289.28x = 12,971,309,704.49
  5. Step 5: Solve for x
    x = 12,971,309,704.49/122,289.28
  6. Step 6: Final answer
    x = 106,070.70

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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.