Home / 206,926.97-310,784.13-128,588.63

Finding the Fourth Proportional to 206,926.97, 310,784.13 and 128,588.63

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Solution

The fourth proportional to 206,926.97, 310,784.13 and 128,588.63 is: 193,127.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,926.97 : 310,784.13 = 128,588.63 : x
  2. Step 2: Convert to fraction form
    206,926.97/310,784.13 = 128,588.63/x
  3. Step 3: Cross multiply
    206,926.97x = 310,784.13 × 128,588.63
  4. Step 4: Simplify right side
    206,926.97x = 39,963,303,948.52
  5. Step 5: Solve for x
    x = 39,963,303,948.52/206,926.97
  6. Step 6: Final answer
    x = 193,127.58

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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.