Home / 135,407.13-186,864.74-74,155.89

Finding the Fourth Proportional to 135,407.13, 186,864.74 and 74,155.89

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Solution

The fourth proportional to 135,407.13, 186,864.74 and 74,155.89 is: 102,336.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,407.13 : 186,864.74 = 74,155.89 : x
  2. Step 2: Convert to fraction form
    135,407.13/186,864.74 = 74,155.89/x
  3. Step 3: Cross multiply
    135,407.13x = 186,864.74 × 74,155.89
  4. Step 4: Simplify right side
    135,407.13x = 13,857,120,661.25
  5. Step 5: Solve for x
    x = 13,857,120,661.25/135,407.13
  6. Step 6: Final answer
    x = 102,336.72

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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.