Home / 118,985.70-164,204.82-65,272.98

Finding the Fourth Proportional to 118,985.70, 164,204.82 and 65,272.98

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Solution

The fourth proportional to 118,985.70, 164,204.82 and 65,272.98 is: 90,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,985.70 : 164,204.82 = 65,272.98 : x
  2. Step 2: Convert to fraction form
    118,985.70/164,204.82 = 65,272.98/x
  3. Step 3: Cross multiply
    118,985.70x = 164,204.82 × 65,272.98
  4. Step 4: Simplify right side
    118,985.70x = 10,718,137,931.76
  5. Step 5: Solve for x
    x = 10,718,137,931.76/118,985.70
  6. Step 6: Final answer
    x = 90,079.21

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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.