Home / 118,934.10-164,136.64-78,577.06

Finding the Fourth Proportional to 118,934.10, 164,136.64 and 78,577.06

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Solution

The fourth proportional to 118,934.10, 164,136.64 and 78,577.06 is: 108,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,934.10 : 164,136.64 = 78,577.06 : x
  2. Step 2: Convert to fraction form
    118,934.10/164,136.64 = 78,577.06/x
  3. Step 3: Cross multiply
    118,934.10x = 164,136.64 × 78,577.06
  4. Step 4: Simplify right side
    118,934.10x = 12,897,374,609.48
  5. Step 5: Solve for x
    x = 12,897,374,609.48/118,934.10
  6. Step 6: Final answer
    x = 108,441.35

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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.