Home / 124,090.80-186,136.20-76,851.60

Finding the Fourth Proportional to 124,090.80, 186,136.20 and 76,851.60

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Solution

The fourth proportional to 124,090.80, 186,136.20 and 76,851.60 is: 115,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,090.80 : 186,136.20 = 76,851.60 : x
  2. Step 2: Convert to fraction form
    124,090.80/186,136.20 = 76,851.60/x
  3. Step 3: Cross multiply
    124,090.80x = 186,136.20 × 76,851.60
  4. Step 4: Simplify right side
    124,090.80x = 14,304,864,787.92
  5. Step 5: Solve for x
    x = 14,304,864,787.92/124,090.80
  6. Step 6: Final answer
    x = 115,277.40

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1.5x scale

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.