Home / 127,293.10-191,013.66-52,420.78

Finding the Fourth Proportional to 127,293.10, 191,013.66 and 52,420.78

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Solution

The fourth proportional to 127,293.10, 191,013.66 and 52,420.78 is: 78,661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,293.10 : 191,013.66 = 52,420.78 : x
  2. Step 2: Convert to fraction form
    127,293.10/191,013.66 = 52,420.78/x
  3. Step 3: Cross multiply
    127,293.10x = 191,013.66 × 52,420.78
  4. Step 4: Simplify right side
    127,293.10x = 10,013,085,047.85
  5. Step 5: Solve for x
    x = 10,013,085,047.85/127,293.10
  6. Step 6: Final answer
    x = 78,661.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.