Home / 117,820.38-162,539.28-79,567.50

Finding the Fourth Proportional to 117,820.38, 162,539.28 and 79,567.50

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Solution

The fourth proportional to 117,820.38, 162,539.28 and 79,567.50 is: 109,767.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,820.38 : 162,539.28 = 79,567.50 : x
  2. Step 2: Convert to fraction form
    117,820.38/162,539.28 = 79,567.50/x
  3. Step 3: Cross multiply
    117,820.38x = 162,539.28 × 79,567.50
  4. Step 4: Simplify right side
    117,820.38x = 12,932,844,161.40
  5. Step 5: Solve for x
    x = 12,932,844,161.40/117,820.38
  6. Step 6: Final answer
    x = 109,767.46

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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.