Home / 138,580.02-191,241.87-74,919.06

Finding the Fourth Proportional to 138,580.02, 191,241.87 and 74,919.06

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Solution

The fourth proportional to 138,580.02, 191,241.87 and 74,919.06 is: 103,389.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,580.02 : 191,241.87 = 74,919.06 : x
  2. Step 2: Convert to fraction form
    138,580.02/191,241.87 = 74,919.06/x
  3. Step 3: Cross multiply
    138,580.02x = 191,241.87 × 74,919.06
  4. Step 4: Simplify right side
    138,580.02x = 14,327,661,133.04
  5. Step 5: Solve for x
    x = 14,327,661,133.04/138,580.02
  6. Step 6: Final answer
    x = 103,389.08

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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.