Home / 187,133.12-258,416.16-120,181.76

Finding the Fourth Proportional to 187,133.12, 258,416.16 and 120,181.76

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Solution

The fourth proportional to 187,133.12, 258,416.16 and 120,181.76 is: 165,961.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,133.12 : 258,416.16 = 120,181.76 : x
  2. Step 2: Convert to fraction form
    187,133.12/258,416.16 = 120,181.76/x
  3. Step 3: Cross multiply
    187,133.12x = 258,416.16 × 120,181.76
  4. Step 4: Simplify right side
    187,133.12x = 31,056,908,921.24
  5. Step 5: Solve for x
    x = 31,056,908,921.24/187,133.12
  6. Step 6: Final answer
    x = 165,961.58

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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.