Home / 136,599.20-188,501.95-79,239.66

Finding the Fourth Proportional to 136,599.20, 188,501.95 and 79,239.66

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Solution

The fourth proportional to 136,599.20, 188,501.95 and 79,239.66 is: 109,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,599.20 : 188,501.95 = 79,239.66 : x
  2. Step 2: Convert to fraction form
    136,599.20/188,501.95 = 79,239.66/x
  3. Step 3: Cross multiply
    136,599.20x = 188,501.95 × 79,239.66
  4. Step 4: Simplify right side
    136,599.20x = 14,936,830,427.34
  5. Step 5: Solve for x
    x = 14,936,830,427.34/136,599.20
  6. Step 6: Final answer
    x = 109,347.86

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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.