Home / 136,427.52-188,270.16-79,077.98

Finding the Fourth Proportional to 136,427.52, 188,270.16 and 79,077.98

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Solution

The fourth proportional to 136,427.52, 188,270.16 and 79,077.98 is: 109,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,427.52 : 188,270.16 = 79,077.98 : x
  2. Step 2: Convert to fraction form
    136,427.52/188,270.16 = 79,077.98/x
  3. Step 3: Cross multiply
    136,427.52x = 188,270.16 × 79,077.98
  4. Step 4: Simplify right side
    136,427.52x = 14,888,023,947.08
  5. Step 5: Solve for x
    x = 14,888,023,947.08/136,427.52
  6. Step 6: Final answer
    x = 109,127.72

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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.