Home / 138,247.04-190,712.64-87,962.24

Finding the Fourth Proportional to 138,247.04, 190,712.64 and 87,962.24

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Solution

The fourth proportional to 138,247.04, 190,712.64 and 87,962.24 is: 121,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,247.04 : 190,712.64 = 87,962.24 : x
  2. Step 2: Convert to fraction form
    138,247.04/190,712.64 = 87,962.24/x
  3. Step 3: Cross multiply
    138,247.04x = 190,712.64 × 87,962.24
  4. Step 4: Simplify right side
    138,247.04x = 16,775,511,010.71
  5. Step 5: Solve for x
    x = 16,775,511,010.71/138,247.04
  6. Step 6: Final answer
    x = 121,344.45

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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.