Home / 138,931.18-191,725.50-75,268.82

Finding the Fourth Proportional to 138,931.18, 191,725.50 and 75,268.82

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Solution

The fourth proportional to 138,931.18, 191,725.50 and 75,268.82 is: 103,871.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,931.18 : 191,725.50 = 75,268.82 : x
  2. Step 2: Convert to fraction form
    138,931.18/191,725.50 = 75,268.82/x
  3. Step 3: Cross multiply
    138,931.18x = 191,725.50 × 75,268.82
  4. Step 4: Simplify right side
    138,931.18x = 14,430,952,148.91
  5. Step 5: Solve for x
    x = 14,430,952,148.91/138,931.18
  6. Step 6: Final answer
    x = 103,871.23

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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.