Home / 138,767.40-191,447.78-91,047.24

Finding the Fourth Proportional to 138,767.40, 191,447.78 and 91,047.24

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Solution

The fourth proportional to 138,767.40, 191,447.78 and 91,047.24 is: 125,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,767.40 : 191,447.78 = 91,047.24 : x
  2. Step 2: Convert to fraction form
    138,767.40/191,447.78 = 91,047.24/x
  3. Step 3: Cross multiply
    138,767.40x = 191,447.78 × 91,047.24
  4. Step 4: Simplify right side
    138,767.40x = 17,430,791,973.13
  5. Step 5: Solve for x
    x = 17,430,791,973.13/138,767.40
  6. Step 6: Final answer
    x = 125,611.58

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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.