Home / 138,185.92-190,681.12-77,755.33

Finding the Fourth Proportional to 138,185.92, 190,681.12 and 77,755.33

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Solution

The fourth proportional to 138,185.92, 190,681.12 and 77,755.33 is: 107,293.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,185.92 : 190,681.12 = 77,755.33 : x
  2. Step 2: Convert to fraction form
    138,185.92/190,681.12 = 77,755.33/x
  3. Step 3: Cross multiply
    138,185.92x = 190,681.12 × 77,755.33
  4. Step 4: Simplify right side
    138,185.92x = 14,826,473,410.37
  5. Step 5: Solve for x
    x = 14,826,473,410.37/138,185.92
  6. Step 6: Final answer
    x = 107,293.66

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1.5x scale

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.