Home / 124,830.30-187,245.45-72,342.30

Finding the Fourth Proportional to 124,830.30, 187,245.45 and 72,342.30

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Solution

The fourth proportional to 124,830.30, 187,245.45 and 72,342.30 is: 108,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,830.30 : 187,245.45 = 72,342.30 : x
  2. Step 2: Convert to fraction form
    124,830.30/187,245.45 = 72,342.30/x
  3. Step 3: Cross multiply
    124,830.30x = 187,245.45 × 72,342.30
  4. Step 4: Simplify right side
    124,830.30x = 13,545,766,517.54
  5. Step 5: Solve for x
    x = 13,545,766,517.54/124,830.30
  6. Step 6: Final answer
    x = 108,513.45

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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.