Home / 187,485.60-258,690.12-111,028.72

Finding the Fourth Proportional to 187,485.60, 258,690.12 and 111,028.72

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Solution

The fourth proportional to 187,485.60, 258,690.12 and 111,028.72 is: 153,195.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,485.60 : 258,690.12 = 111,028.72 : x
  2. Step 2: Convert to fraction form
    187,485.60/258,690.12 = 111,028.72/x
  3. Step 3: Cross multiply
    187,485.60x = 258,690.12 × 111,028.72
  4. Step 4: Simplify right side
    187,485.60x = 28,722,032,900.25
  5. Step 5: Solve for x
    x = 28,722,032,900.25/187,485.60
  6. Step 6: Final answer
    x = 153,195.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.