Home / 124,427.20-186,203.40-86,810.80

Finding the Fourth Proportional to 124,427.20, 186,203.40 and 86,810.80

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Solution

The fourth proportional to 124,427.20, 186,203.40 and 86,810.80 is: 129,911.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,427.20 : 186,203.40 = 86,810.80 : x
  2. Step 2: Convert to fraction form
    124,427.20/186,203.40 = 86,810.80/x
  3. Step 3: Cross multiply
    124,427.20x = 186,203.40 × 86,810.80
  4. Step 4: Simplify right side
    124,427.20x = 16,164,466,116.72
  5. Step 5: Solve for x
    x = 16,164,466,116.72/124,427.20
  6. Step 6: Final answer
    x = 129,911.03

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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.