Home / 426,106.15-639,246.70-126,560.05

Finding the Fourth Proportional to 426,106.15, 639,246.70 and 126,560.05

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Solution

The fourth proportional to 426,106.15, 639,246.70 and 126,560.05 is: 189,866.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,106.15 : 639,246.70 = 126,560.05 : x
  2. Step 2: Convert to fraction form
    426,106.15/639,246.70 = 126,560.05/x
  3. Step 3: Cross multiply
    426,106.15x = 639,246.70 × 126,560.05
  4. Step 4: Simplify right side
    426,106.15x = 80,903,094,314.34
  5. Step 5: Solve for x
    x = 80,903,094,314.34/426,106.15
  6. Step 6: Final answer
    x = 189,866.06

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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.