Home / 138,720.74-191,434.82-75,058.52

Finding the Fourth Proportional to 138,720.74, 191,434.82 and 75,058.52

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Solution

The fourth proportional to 138,720.74, 191,434.82 and 75,058.52 is: 103,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,720.74 : 191,434.82 = 75,058.52 : x
  2. Step 2: Convert to fraction form
    138,720.74/191,434.82 = 75,058.52/x
  3. Step 3: Cross multiply
    138,720.74x = 191,434.82 × 75,058.52
  4. Step 4: Simplify right side
    138,720.74x = 14,368,814,368.96
  5. Step 5: Solve for x
    x = 14,368,814,368.96/138,720.74
  6. Step 6: Final answer
    x = 103,580.86

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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.