Home / 187,270.13-258,432.80-120,318.77

Finding the Fourth Proportional to 187,270.13, 258,432.80 and 120,318.77

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Solution

The fourth proportional to 187,270.13, 258,432.80 and 120,318.77 is: 166,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,270.13 : 258,432.80 = 120,318.77 : x
  2. Step 2: Convert to fraction form
    187,270.13/258,432.80 = 120,318.77/x
  3. Step 3: Cross multiply
    187,270.13x = 258,432.80 × 120,318.77
  4. Step 4: Simplify right side
    187,270.13x = 31,094,314,729.90
  5. Step 5: Solve for x
    x = 31,094,314,729.90/187,270.13
  6. Step 6: Final answer
    x = 166,039.91

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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.