Home / 140,337.12-193,678.38-76,684.35

Finding the Fourth Proportional to 140,337.12, 193,678.38 and 76,684.35

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Solution

The fourth proportional to 140,337.12, 193,678.38 and 76,684.35 is: 105,831.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,337.12 : 193,678.38 = 76,684.35 : x
  2. Step 2: Convert to fraction form
    140,337.12/193,678.38 = 76,684.35/x
  3. Step 3: Cross multiply
    140,337.12x = 193,678.38 × 76,684.35
  4. Step 4: Simplify right side
    140,337.12x = 14,852,100,679.35
  5. Step 5: Solve for x
    x = 14,852,100,679.35/140,337.12
  6. Step 6: Final answer
    x = 105,831.59

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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.