Home / 106,359.40-159,344.70-86,530.60

Finding the Fourth Proportional to 106,359.40, 159,344.70 and 86,530.60

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Solution

The fourth proportional to 106,359.40, 159,344.70 and 86,530.60 is: 129,637.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,359.40 : 159,344.70 = 86,530.60 : x
  2. Step 2: Convert to fraction form
    106,359.40/159,344.70 = 86,530.60/x
  3. Step 3: Cross multiply
    106,359.40x = 159,344.70 × 86,530.60
  4. Step 4: Simplify right side
    106,359.40x = 13,788,192,497.82
  5. Step 5: Solve for x
    x = 13,788,192,497.82/106,359.40
  6. Step 6: Final answer
    x = 129,637.74

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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.