Home / 127,605.78-191,367.85-42,200.77

Finding the Fourth Proportional to 127,605.78, 191,367.85 and 42,200.77

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Solution

The fourth proportional to 127,605.78, 191,367.85 and 42,200.77 is: 63,287.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,605.78 : 191,367.85 = 42,200.77 : x
  2. Step 2: Convert to fraction form
    127,605.78/191,367.85 = 42,200.77/x
  3. Step 3: Cross multiply
    127,605.78x = 191,367.85 × 42,200.77
  4. Step 4: Simplify right side
    127,605.78x = 8,075,870,039.32
  5. Step 5: Solve for x
    x = 8,075,870,039.32/127,605.78
  6. Step 6: Final answer
    x = 63,287.65

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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.