Home / 127,985.86-176,606.49-90,194.50

Finding the Fourth Proportional to 127,985.86, 176,606.49 and 90,194.50

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Solution

The fourth proportional to 127,985.86, 176,606.49 and 90,194.50 is: 124,458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,985.86 : 176,606.49 = 90,194.50 : x
  2. Step 2: Convert to fraction form
    127,985.86/176,606.49 = 90,194.50/x
  3. Step 3: Cross multiply
    127,985.86x = 176,606.49 × 90,194.50
  4. Step 4: Simplify right side
    127,985.86x = 15,928,934,062.31
  5. Step 5: Solve for x
    x = 15,928,934,062.31/127,985.86
  6. Step 6: Final answer
    x = 124,458.55

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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.