Home / 139,939.29-193,114.26-76,277.34

Finding the Fourth Proportional to 139,939.29, 193,114.26 and 76,277.34

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Solution

The fourth proportional to 139,939.29, 193,114.26 and 76,277.34 is: 105,261.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,939.29 : 193,114.26 = 76,277.34 : x
  2. Step 2: Convert to fraction form
    139,939.29/193,114.26 = 76,277.34/x
  3. Step 3: Cross multiply
    139,939.29x = 193,114.26 × 76,277.34
  4. Step 4: Simplify right side
    139,939.29x = 14,730,242,068.87
  5. Step 5: Solve for x
    x = 14,730,242,068.87/139,939.29
  6. Step 6: Final answer
    x = 105,261.66

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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.