Home / 140,386.79-193,733.79-76,724.57

Finding the Fourth Proportional to 140,386.79, 193,733.79 and 76,724.57

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Solution

The fourth proportional to 140,386.79, 193,733.79 and 76,724.57 is: 105,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,386.79 : 193,733.79 = 76,724.57 : x
  2. Step 2: Convert to fraction form
    140,386.79/193,733.79 = 76,724.57/x
  3. Step 3: Cross multiply
    140,386.79x = 193,733.79 × 76,724.57
  4. Step 4: Simplify right side
    140,386.79x = 14,864,141,732.22
  5. Step 5: Solve for x
    x = 14,864,141,732.22/140,386.79
  6. Step 6: Final answer
    x = 105,879.92

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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.