Home / 139,923.41-193,088.68-76,259.84

Finding the Fourth Proportional to 139,923.41, 193,088.68 and 76,259.84

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Solution

The fourth proportional to 139,923.41, 193,088.68 and 76,259.84 is: 105,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,923.41 : 193,088.68 = 76,259.84 : x
  2. Step 2: Convert to fraction form
    139,923.41/193,088.68 = 76,259.84/x
  3. Step 3: Cross multiply
    139,923.41x = 193,088.68 × 76,259.84
  4. Step 4: Simplify right side
    139,923.41x = 14,724,910,686.52
  5. Step 5: Solve for x
    x = 14,724,910,686.52/139,923.41
  6. Step 6: Final answer
    x = 105,235.51

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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.