Home / 119,738.63-165,239.15-66,023.78

Finding the Fourth Proportional to 119,738.63, 165,239.15 and 66,023.78

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Solution

The fourth proportional to 119,738.63, 165,239.15 and 66,023.78 is: 91,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,738.63 : 165,239.15 = 66,023.78 : x
  2. Step 2: Convert to fraction form
    119,738.63/165,239.15 = 66,023.78/x
  3. Step 3: Cross multiply
    119,738.63x = 165,239.15 × 66,023.78
  4. Step 4: Simplify right side
    119,738.63x = 10,909,712,130.67
  5. Step 5: Solve for x
    x = 10,909,712,130.67/119,738.63
  6. Step 6: Final answer
    x = 91,112.72

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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.