Home / 138,399.34-191,038.25-86,052.28

Finding the Fourth Proportional to 138,399.34, 191,038.25 and 86,052.28

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Solution

The fourth proportional to 138,399.34, 191,038.25 and 86,052.28 is: 118,781.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,399.34 : 191,038.25 = 86,052.28 : x
  2. Step 2: Convert to fraction form
    138,399.34/191,038.25 = 86,052.28/x
  3. Step 3: Cross multiply
    138,399.34x = 191,038.25 × 86,052.28
  4. Step 4: Simplify right side
    138,399.34x = 16,439,275,594.26
  5. Step 5: Solve for x
    x = 16,439,275,594.26/138,399.34
  6. Step 6: Final answer
    x = 118,781.46

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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.