Home / 138,023.40-190,467.86-77,596.58

Finding the Fourth Proportional to 138,023.40, 190,467.86 and 77,596.58

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Solution

The fourth proportional to 138,023.40, 190,467.86 and 77,596.58 is: 107,080.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023.40 : 190,467.86 = 77,596.58 : x
  2. Step 2: Convert to fraction form
    138,023.40/190,467.86 = 77,596.58/x
  3. Step 3: Cross multiply
    138,023.40x = 190,467.86 × 77,596.58
  4. Step 4: Simplify right side
    138,023.40x = 14,779,654,535.92
  5. Step 5: Solve for x
    x = 14,779,654,535.92/138,023.40
  6. Step 6: Final answer
    x = 107,080.79

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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.