Home / 138,717.72-191,430.42-75,055.52

Finding the Fourth Proportional to 138,717.72, 191,430.42 and 75,055.52

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Solution

The fourth proportional to 138,717.72, 191,430.42 and 75,055.52 is: 103,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,717.72 : 191,430.42 = 75,055.52 : x
  2. Step 2: Convert to fraction form
    138,717.72/191,430.42 = 75,055.52/x
  3. Step 3: Cross multiply
    138,717.72x = 191,430.42 × 75,055.52
  4. Step 4: Simplify right side
    138,717.72x = 14,367,908,759.77
  5. Step 5: Solve for x
    x = 14,367,908,759.77/138,717.72
  6. Step 6: Final answer
    x = 103,576.59

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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.