Home / 118,926.26-164,125.80-78,569.30

Finding the Fourth Proportional to 118,926.26, 164,125.80 and 78,569.30

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Solution

The fourth proportional to 118,926.26, 164,125.80 and 78,569.30 is: 108,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,926.26 : 164,125.80 = 78,569.30 : x
  2. Step 2: Convert to fraction form
    118,926.26/164,125.80 = 78,569.30/x
  3. Step 3: Cross multiply
    118,926.26x = 164,125.80 × 78,569.30
  4. Step 4: Simplify right side
    118,926.26x = 12,895,249,217.94
  5. Step 5: Solve for x
    x = 12,895,249,217.94/118,926.26
  6. Step 6: Final answer
    x = 108,430.63

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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.