Home / 138,080.10-190,549.29-77,651.17

Finding the Fourth Proportional to 138,080.10, 190,549.29 and 77,651.17

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Solution

The fourth proportional to 138,080.10, 190,549.29 and 77,651.17 is: 107,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,080.10 : 190,549.29 = 77,651.17 : x
  2. Step 2: Convert to fraction form
    138,080.10/190,549.29 = 77,651.17/x
  3. Step 3: Cross multiply
    138,080.10x = 190,549.29 × 77,651.17
  4. Step 4: Simplify right side
    138,080.10x = 14,796,375,125.99
  5. Step 5: Solve for x
    x = 14,796,375,125.99/138,080.10
  6. Step 6: Final answer
    x = 107,157.91

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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.