Home / 205,988.31-308,732.95-87,410.55

Finding the Fourth Proportional to 205,988.31, 308,732.95 and 87,410.55

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Solution

The fourth proportional to 205,988.31, 308,732.95 and 87,410.55 is: 131,009.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,988.31 : 308,732.95 = 87,410.55 : x
  2. Step 2: Convert to fraction form
    205,988.31/308,732.95 = 87,410.55/x
  3. Step 3: Cross multiply
    205,988.31x = 308,732.95 × 87,410.55
  4. Step 4: Simplify right side
    205,988.31x = 26,986,516,962.62
  5. Step 5: Solve for x
    x = 26,986,516,962.62/205,988.31
  6. Step 6: Final answer
    x = 131,009.94

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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.