Home / 187,999.36-259,464-121,125.76

Finding the Fourth Proportional to 187,999.36, 259,464 and 121,125.76

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Solution

The fourth proportional to 187,999.36, 259,464 and 121,125.76 is: 167,169.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,999.36 : 259,464 = 121,125.76 : x
  2. Step 2: Convert to fraction form
    187,999.36/259,464 = 121,125.76/x
  3. Step 3: Cross multiply
    187,999.36x = 259,464 × 121,125.76
  4. Step 4: Simplify right side
    187,999.36x = 31,427,774,192.64
  5. Step 5: Solve for x
    x = 31,427,774,192.64/187,999.36
  6. Step 6: Final answer
    x = 167,169.58

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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.