Home / 118,921.07-164,109.20-65,206.53

Finding the Fourth Proportional to 118,921.07, 164,109.20 and 65,206.53

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Solution

The fourth proportional to 118,921.07, 164,109.20 and 65,206.53 is: 89,983.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,921.07 : 164,109.20 = 65,206.53 : x
  2. Step 2: Convert to fraction form
    118,921.07/164,109.20 = 65,206.53/x
  3. Step 3: Cross multiply
    118,921.07x = 164,109.20 × 65,206.53
  4. Step 4: Simplify right side
    118,921.07x = 10,700,991,473.08
  5. Step 5: Solve for x
    x = 10,700,991,473.08/118,921.07
  6. Step 6: Final answer
    x = 89,983.98

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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.