Home / 135,465.13-186,939.75-74,210.83

Finding the Fourth Proportional to 135,465.13, 186,939.75 and 74,210.83

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Solution

The fourth proportional to 135,465.13, 186,939.75 and 74,210.83 is: 102,409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,465.13 : 186,939.75 = 74,210.83 : x
  2. Step 2: Convert to fraction form
    135,465.13/186,939.75 = 74,210.83/x
  3. Step 3: Cross multiply
    135,465.13x = 186,939.75 × 74,210.83
  4. Step 4: Simplify right side
    135,465.13x = 13,872,953,072.79
  5. Step 5: Solve for x
    x = 13,872,953,072.79/135,465.13
  6. Step 6: Final answer
    x = 102,409.78

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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.