Home / 206,772.45-285,312.48-129,238.94

Finding the Fourth Proportional to 206,772.45, 285,312.48 and 129,238.94

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Solution

The fourth proportional to 206,772.45, 285,312.48 and 129,238.94 is: 178,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,772.45 : 285,312.48 = 129,238.94 : x
  2. Step 2: Convert to fraction form
    206,772.45/285,312.48 = 129,238.94/x
  3. Step 3: Cross multiply
    206,772.45x = 285,312.48 × 129,238.94
  4. Step 4: Simplify right side
    206,772.45x = 36,873,482,712.61
  5. Step 5: Solve for x
    x = 36,873,482,712.61/206,772.45
  6. Step 6: Final answer
    x = 178,328.80

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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.