Home / 138,354.48-190,943.64-84,675.24

Finding the Fourth Proportional to 138,354.48, 190,943.64 and 84,675.24

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Solution

The fourth proportional to 138,354.48, 190,943.64 and 84,675.24 is: 116,860.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,354.48 : 190,943.64 = 84,675.24 : x
  2. Step 2: Convert to fraction form
    138,354.48/190,943.64 = 84,675.24/x
  3. Step 3: Cross multiply
    138,354.48x = 190,943.64 × 84,675.24
  4. Step 4: Simplify right side
    138,354.48x = 16,168,198,543.47
  5. Step 5: Solve for x
    x = 16,168,198,543.47/138,354.48
  6. Step 6: Final answer
    x = 116,860.68

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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.