Home / 124,890.40-187,335.60-86,836.60

Finding the Fourth Proportional to 124,890.40, 187,335.60 and 86,836.60

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Solution

The fourth proportional to 124,890.40, 187,335.60 and 86,836.60 is: 130,254.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,890.40 : 187,335.60 = 86,836.60 : x
  2. Step 2: Convert to fraction form
    124,890.40/187,335.60 = 86,836.60/x
  3. Step 3: Cross multiply
    124,890.40x = 187,335.60 × 86,836.60
  4. Step 4: Simplify right side
    124,890.40x = 16,267,586,562.96
  5. Step 5: Solve for x
    x = 16,267,586,562.96/124,890.40
  6. Step 6: Final answer
    x = 130,254.90

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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.