Home / 119,290.81-164,621.85-65,579.28

Finding the Fourth Proportional to 119,290.81, 164,621.85 and 65,579.28

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Solution

The fourth proportional to 119,290.81, 164,621.85 and 65,579.28 is: 90,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,290.81 : 164,621.85 = 65,579.28 : x
  2. Step 2: Convert to fraction form
    119,290.81/164,621.85 = 65,579.28/x
  3. Step 3: Cross multiply
    119,290.81x = 164,621.85 × 65,579.28
  4. Step 4: Simplify right side
    119,290.81x = 10,795,782,395.27
  5. Step 5: Solve for x
    x = 10,795,782,395.27/119,290.81
  6. Step 6: Final answer
    x = 90,499.70

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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.