Home / 138,054.68-190,045.32-102,177.08

Finding the Fourth Proportional to 138,054.68, 190,045.32 and 102,177.08

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Solution

The fourth proportional to 138,054.68, 190,045.32 and 102,177.08 is: 140,656.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,054.68 : 190,045.32 = 102,177.08 : x
  2. Step 2: Convert to fraction form
    138,054.68/190,045.32 = 102,177.08/x
  3. Step 3: Cross multiply
    138,054.68x = 190,045.32 × 102,177.08
  4. Step 4: Simplify right side
    138,054.68x = 19,418,275,865.27
  5. Step 5: Solve for x
    x = 19,418,275,865.27/138,054.68
  6. Step 6: Final answer
    x = 140,656.41

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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.