Home / 127,420.80-191,155.26-42,036.54

Finding the Fourth Proportional to 127,420.80, 191,155.26 and 42,036.54

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Solution

The fourth proportional to 127,420.80, 191,155.26 and 42,036.54 is: 63,062.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,420.80 : 191,155.26 = 42,036.54 : x
  2. Step 2: Convert to fraction form
    127,420.80/191,155.26 = 42,036.54/x
  3. Step 3: Cross multiply
    127,420.80x = 191,155.26 × 42,036.54
  4. Step 4: Simplify right side
    127,420.80x = 8,035,505,733.20
  5. Step 5: Solve for x
    x = 8,035,505,733.20/127,420.80
  6. Step 6: Final answer
    x = 63,062.75

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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.