Home / 119,121.16-164,389.55-65,405.71

Finding the Fourth Proportional to 119,121.16, 164,389.55 and 65,405.71

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Solution

The fourth proportional to 119,121.16, 164,389.55 and 65,405.71 is: 90,261.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,121.16 : 164,389.55 = 65,405.71 : x
  2. Step 2: Convert to fraction form
    119,121.16/164,389.55 = 65,405.71/x
  3. Step 3: Cross multiply
    119,121.16x = 164,389.55 × 65,405.71
  4. Step 4: Simplify right side
    119,121.16x = 10,752,014,412.38
  5. Step 5: Solve for x
    x = 10,752,014,412.38/119,121.16
  6. Step 6: Final answer
    x = 90,261.16

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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.