Home / 138,127.77-190,633.19-77,700.96

Finding the Fourth Proportional to 138,127.77, 190,633.19 and 77,700.96

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Solution

The fourth proportional to 138,127.77, 190,633.19 and 77,700.96 is: 107,236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,127.77 : 190,633.19 = 77,700.96 : x
  2. Step 2: Convert to fraction form
    138,127.77/190,633.19 = 77,700.96/x
  3. Step 3: Cross multiply
    138,127.77x = 190,633.19 × 77,700.96
  4. Step 4: Simplify right side
    138,127.77x = 14,812,381,482.36
  5. Step 5: Solve for x
    x = 14,812,381,482.36/138,127.77
  6. Step 6: Final answer
    x = 107,236.81

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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.