Home / 138,231.64-190,760.01-77,803.18

Finding the Fourth Proportional to 138,231.64, 190,760.01 and 77,803.18

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Solution

The fourth proportional to 138,231.64, 190,760.01 and 77,803.18 is: 107,368.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,231.64 : 190,760.01 = 77,803.18 : x
  2. Step 2: Convert to fraction form
    138,231.64/190,760.01 = 77,803.18/x
  3. Step 3: Cross multiply
    138,231.64x = 190,760.01 × 77,803.18
  4. Step 4: Simplify right side
    138,231.64x = 14,841,735,394.83
  5. Step 5: Solve for x
    x = 14,841,735,394.83/138,231.64
  6. Step 6: Final answer
    x = 107,368.58

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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.