Home / 137,918.59-190,327.82-77,489.20

Finding the Fourth Proportional to 137,918.59, 190,327.82 and 77,489.20

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Solution

The fourth proportional to 137,918.59, 190,327.82 and 77,489.20 is: 106,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,918.59 : 190,327.82 = 77,489.20 : x
  2. Step 2: Convert to fraction form
    137,918.59/190,327.82 = 77,489.20/x
  3. Step 3: Cross multiply
    137,918.59x = 190,327.82 × 77,489.20
  4. Step 4: Simplify right side
    137,918.59x = 14,748,349,507.35
  5. Step 5: Solve for x
    x = 14,748,349,507.35/137,918.59
  6. Step 6: Final answer
    x = 106,935.18

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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.