Home / 86,337.36-129,506.04-81,464.40

Finding the Fourth Proportional to 86,337.36, 129,506.04 and 81,464.40

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Solution

The fourth proportional to 86,337.36, 129,506.04 and 81,464.40 is: 122,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,337.36 : 129,506.04 = 81,464.40 : x
  2. Step 2: Convert to fraction form
    86,337.36/129,506.04 = 81,464.40/x
  3. Step 3: Cross multiply
    86,337.36x = 129,506.04 × 81,464.40
  4. Step 4: Simplify right side
    86,337.36x = 10,550,131,844.98
  5. Step 5: Solve for x
    x = 10,550,131,844.98/86,337.36
  6. Step 6: Final answer
    x = 122,196.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.