Home / 126,043.40-189,065.10-102,423.80

Finding the Fourth Proportional to 126,043.40, 189,065.10 and 102,423.80

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Solution

The fourth proportional to 126,043.40, 189,065.10 and 102,423.80 is: 153,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,043.40 : 189,065.10 = 102,423.80 : x
  2. Step 2: Convert to fraction form
    126,043.40/189,065.10 = 102,423.80/x
  3. Step 3: Cross multiply
    126,043.40x = 189,065.10 × 102,423.80
  4. Step 4: Simplify right side
    126,043.40x = 19,364,765,989.38
  5. Step 5: Solve for x
    x = 19,364,765,989.38/126,043.40
  6. Step 6: Final answer
    x = 153,635.70

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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.