Home / 138,447.15-191,057.13-74,784.93

Finding the Fourth Proportional to 138,447.15, 191,057.13 and 74,784.93

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Solution

The fourth proportional to 138,447.15, 191,057.13 and 74,784.93 is: 103,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,447.15 : 191,057.13 = 74,784.93 : x
  2. Step 2: Convert to fraction form
    138,447.15/191,057.13 = 74,784.93/x
  3. Step 3: Cross multiply
    138,447.15x = 191,057.13 × 74,784.93
  4. Step 4: Simplify right side
    138,447.15x = 14,288,194,093.05
  5. Step 5: Solve for x
    x = 14,288,194,093.05/138,447.15
  6. Step 6: Final answer
    x = 103,203.24

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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.