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Finding the Fourth Proportional to 137,809.48, 190,162.92 and 92,478.40

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Solution

The fourth proportional to 137,809.48, 190,162.92 and 92,478.40 is: 127,610.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,809.48 : 190,162.92 = 92,478.40 : x
  2. Step 2: Convert to fraction form
    137,809.48/190,162.92 = 92,478.40/x
  3. Step 3: Cross multiply
    137,809.48x = 190,162.92 × 92,478.40
  4. Step 4: Simplify right side
    137,809.48x = 17,585,962,580.93
  5. Step 5: Solve for x
    x = 17,585,962,580.93/137,809.48
  6. Step 6: Final answer
    x = 127,610.69

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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.