Home / 135,435.36-186,838.56-87,704.40

Finding the Fourth Proportional to 135,435.36, 186,838.56 and 87,704.40

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Solution

The fourth proportional to 135,435.36, 186,838.56 and 87,704.40 is: 120,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,435.36 : 186,838.56 = 87,704.40 : x
  2. Step 2: Convert to fraction form
    135,435.36/186,838.56 = 87,704.40/x
  3. Step 3: Cross multiply
    135,435.36x = 186,838.56 × 87,704.40
  4. Step 4: Simplify right side
    135,435.36x = 16,386,563,801.66
  5. Step 5: Solve for x
    x = 16,386,563,801.66/135,435.36
  6. Step 6: Final answer
    x = 120,991.77

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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.