Home / 136,407.04-188,198.40-76,779.52

Finding the Fourth Proportional to 136,407.04, 188,198.40 and 76,779.52

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Solution

The fourth proportional to 136,407.04, 188,198.40 and 76,779.52 is: 105,931.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,407.04 : 188,198.40 = 76,779.52 : x
  2. Step 2: Convert to fraction form
    136,407.04/188,198.40 = 76,779.52/x
  3. Step 3: Cross multiply
    136,407.04x = 188,198.40 × 76,779.52
  4. Step 4: Simplify right side
    136,407.04x = 14,449,782,816.77
  5. Step 5: Solve for x
    x = 14,449,782,816.77/136,407.04
  6. Step 6: Final answer
    x = 105,931.36

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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.