Home / 452,276.30-678,512.87-136,725

Finding the Fourth Proportional to 452,276.30, 678,512.87 and 136,725

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Solution

The fourth proportional to 452,276.30, 678,512.87 and 136,725 is: 205,117.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,276.30 : 678,512.87 = 136,725 : x
  2. Step 2: Convert to fraction form
    452,276.30/678,512.87 = 136,725/x
  3. Step 3: Cross multiply
    452,276.30x = 678,512.87 × 136,725
  4. Step 4: Simplify right side
    452,276.30x = 92,769,671,467.13
  5. Step 5: Solve for x
    x = 92,769,671,467.13/452,276.30
  6. Step 6: Final answer
    x = 205,117.25

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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.