Home / 139,942.59-193,119.28-76,279.02

Finding the Fourth Proportional to 139,942.59, 193,119.28 and 76,279.02

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Solution

The fourth proportional to 139,942.59, 193,119.28 and 76,279.02 is: 105,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,942.59 : 193,119.28 = 76,279.02 : x
  2. Step 2: Convert to fraction form
    139,942.59/193,119.28 = 76,279.02/x
  3. Step 3: Cross multiply
    139,942.59x = 193,119.28 × 76,279.02
  4. Step 4: Simplify right side
    139,942.59x = 14,730,949,421.51
  5. Step 5: Solve for x
    x = 14,730,949,421.51/139,942.59
  6. Step 6: Final answer
    x = 105,264.23

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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.