Home / 138,135.08-190,653.63-89,796.89

Finding the Fourth Proportional to 138,135.08, 190,653.63 and 89,796.89

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Solution

The fourth proportional to 138,135.08, 190,653.63 and 89,796.89 is: 123,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,135.08 : 190,653.63 = 89,796.89 : x
  2. Step 2: Convert to fraction form
    138,135.08/190,653.63 = 89,796.89/x
  3. Step 3: Cross multiply
    138,135.08x = 190,653.63 × 89,796.89
  4. Step 4: Simplify right side
    138,135.08x = 17,120,103,041.21
  5. Step 5: Solve for x
    x = 17,120,103,041.21/138,135.08
  6. Step 6: Final answer
    x = 123,937.40

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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.