Home / 135,291.15-186,702-74,864.34

Finding the Fourth Proportional to 135,291.15, 186,702 and 74,864.34

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Solution

The fourth proportional to 135,291.15, 186,702 and 74,864.34 is: 103,312.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,291.15 : 186,702 = 74,864.34 : x
  2. Step 2: Convert to fraction form
    135,291.15/186,702 = 74,864.34/x
  3. Step 3: Cross multiply
    135,291.15x = 186,702 × 74,864.34
  4. Step 4: Simplify right side
    135,291.15x = 13,977,322,006.68
  5. Step 5: Solve for x
    x = 13,977,322,006.68/135,291.15
  6. Step 6: Final answer
    x = 103,312.91

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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.