Home / 257,955.08-386,854.86-91,733

Finding the Fourth Proportional to 257,955.08, 386,854.86 and 91,733

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Solution

The fourth proportional to 257,955.08, 386,854.86 and 91,733 is: 137,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,955.08 : 386,854.86 = 91,733 : x
  2. Step 2: Convert to fraction form
    257,955.08/386,854.86 = 91,733/x
  3. Step 3: Cross multiply
    257,955.08x = 386,854.86 × 91,733
  4. Step 4: Simplify right side
    257,955.08x = 35,487,356,872.38
  5. Step 5: Solve for x
    x = 35,487,356,872.38/257,955.08
  6. Step 6: Final answer
    x = 137,571.85

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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.